4.1.3 - 2007-11-26

  - Updated the installation instructions and the starter manual that
    are included on the CD.
  - Fixed a licensing problem with some 4.1.2 installers.
  - Fixed the name of the default install directory on Linux.

4.1.2 - 2007-10-19

  - Added the ability to switch from computing area and perimeter on 
    a sphere to computing on a plane instead, which more accurate for 
    very small scale datasets.
  - Fixed bug in Select by Distance that was excluding valid records 
    from the result in certain circumstances.
  - Fixed bug in selecting the Project Settings menu item when the 
    Project Settings window was already open.

4.1.1 - 2007-10-01

  - Fixed bug in deleting a record from a layer with one or more 
    selections.
  - Fixed bug in saving non-square grids as ASCII grid files.

4.1 - 2007-08-29

  - Updated the tour video.

4.1rc4 - 2007-07-16

  - Added support for WMS servers that serve only fixed-size images.
  - Modified the way that dates are compared so that the precision 
    of the comparison matches the accuracy of the values.
  - Modified the shutdown procedure to hopefully fix the problem with
    the contents of the InstallAnywhere ".lax" file disappearing.
  - Fixed bug in polygon operations with negative-area "hole" 
    polygons that intersect at a single vertex.

4.1rc3 - 2007-06-28

  - Modified the Get Information tool so that the layer selection 
    dialog is only displayed if the user clicks on the map when no
    layer is selected.
  - Modified the table window so that it automatically re-sizes when
    the "exchange rows & columns" setting is changed.
  - Ensure that all XML files are always read using UTF-8 encoding.
  - Fixed the registration URL for Pasco.
  - Fixed bug in reading WMS capabilities caused by undocumented 
    feature of the Apache HTTP Client library.
  - Fixed bug in computing the union of polygons whose result is a
    heterogeneous geometry collections.
  - Fixed bug in text data file import that was labelling both the
    latitude and longitude fields as "latitude".
  - Fixed bug that was sometimes causing the analysis operation 
    result name field not to be re-set to the default name.

4.1rc2 - 2007-05-29

  - Modified EPSG projection code parsing, caching projections to
    make startup run much faster.
  - Vastly improved automatic discrimination between UTF-8 and ISO 
    text encodings.
  - Updated THREDDS libraries to version 2.2.20.3.
  - Restored missing arrow icon from the Welcome Window.
  - Fixed bug in some analysis tools that was causing the result 
    description not to change when measurement units were modified.
  - Fixed bug in polygon operations that caused an error when 
    removing self-intersections simplified a polygon out of 
    existence.
  - Fixed bugs in opening a child window while editing a layer in
    Edit mode.

4.1rc1 - 2007-05-10

  - Updated the documentation.
  - Moved error messages to the properties file, so they can be 
    translated.
  - Fixed bug in editing layer information that was causing changes 
    to layer name and data documentation not to be saved.
  - Fixed bug in parsing XML files with an invalid URL for their DTD
    location.
  - Modified WMS server support so that My World pays attention to 
    the list of supported image formats.
  - Fixed a bug in creating a new WMS layer caused by a typo.
  - Fixed bug in reporting an error while reading WMS capabilities 
    from a server.
  - Updated the WMS data files included in My World to use the new 
    and improved WMS layer format.

4.1b6 - 2007-05-07

  - Added the Memory Monitor dialog to the Windows menu.
  - Changed the math library My World uses, for better consistency 
    across different platforms and processors.
  - Added a check for duplicate field names to field-creation 
    operations (duplicate field names can cause all kinds of 
    problems).
  - Modified the behavior of layer control panels so they don't 
    selections when the user clicks outside the selections table.
  - Modified the license manager to begin counting down toward 
    expiration on the first day My World is launched AFTER the day 
    it's installed, rather than when it's installed.
  - Replaced Area Density units with Spread Rate (for rainfall).
  - Fixed bug in reading certain types of date values from dbf files.
  - Fixed bug in checking for UTF-8 BOM.
  - Fixed bug in computing union that could occur when the inputs 
    were in the wrong order.

4.1b5 - 2007-04-25

  - Added units to result description of select by value operation.
  - Modified math operation analysis tool to attempt to figure out 
    the units of the result field.
  - Modified the My World Server importer to read field information
    from the server instead of using hard-coded field info.
  - Fixed bug in reading text in UTF-8 encoding with a Byte Order 
    Marker (BOM).
  - Fixed encoding issues with various xml files written by My World.
  - Fixed bug in loading built-in conductivity units.
  - Fixed bug in parsing quoted cells in CSV files introduced by bug
    fix in version 4.1b3.
  - Fixed bug in simplifying geometries before buffering that would 
    sometimes simplify small geometries out of existence.
  - Fixed cursor location label in status bar to be variable rather 
    than fixed width, so it doesn't get cropped in non-Metal look 
    and feels.
  - Fixed bug in loading map views from older projects that used 
    a geographic projection with linear projected units (e.g., the
    Earth Structures projects).
  - Fixed problem with population density field in Countries layers.

4.1b4 - 2007-04-19

  - Vastly improved the memory efficiency of computing interior 
    buffers of polygons, and buffers of line and point layers, and
    somewhat improved the efficiency of computing edge buffers of
    polygons.
  - Fixed bug in clipping polygon layers that was causing all values
    in the result's data table to be shifted left by one field.
  - Fixed bug that was sometimes causing the error dialog for errors
    during an analysis operation to disappear before the user could 
    read it.

4.1b3 - 2007-04-10

  - Removed work-around for bug in THREDDS libraries that was fixed
    by the upgrade to version 2.2.18.
  - Removed the installer option to use an existing Java Virtual 
    Machine on some platforms -- it was nothing but trouble.
  - Fixed bugs in saving mapview folders.
  - Fixed bug in deleting several types of data files.
  - Fixed bug in saving and restoring the settings of Graticule 
    layers in map views.
  - Fixed bug in parsing text data files with invalid dates in 
    ISO format.
  - Fixed bug in parsing CSV files with values containg both escaped 
    double-quote characters and quoted commas.

4.1b2 - 2007-03-15

  - Backed out some of the changes from the alternate interface 
    modes, because some projects have already started taking 
    screenshots and we don't want to make them start over.
  - Moved detailed messages for the progress dialog to the 
    properties file so they're localizable.
  - Fixed bug in editing file links with spaces in the path.
  - Fixed bug in opening NetCDF located in a path containing spaces.

4.1b1 - 2007-03-13

  - Integrated some features from alternate interface modes A and B 
    into the main interface, and disabled interface mode switching.
  - Added tooltips to the data library and layer list that display 
    the entire layer name when it's not otherwise visible.
  - Updated THREDDS libraries to the latest version (2.2.18).
  - Fixed bug that caused project locking not to work for zipped 
    project files.
  - Fixed bug in saving and opening project files containing layers 
    whose names had file extensions.
  - Fixed bug in managing changes to projection editor dialogs.
  - Fixed bug in searching tables with rows and columns exchanged.
  - Fixed bug that was sometimes causing table search not to return 
    to the beginning of the table after reaching the end.
  - Fixed bug caused by new grid collection features when loading 
    geographic grids with 0-360 longitude extents.
  - Fixed bug in new grid collection that was leaving off the top
    row and rightmost column of some grids.
  - Fixed bug in reading CSV and TSV files with missing values for a
    column in all of the first seven rows.
  - Locked the example project files.
  - Fixed bug in saving a new project file over the existing one 
    using "Save Project As...".
  - Fixed bug in saving linked files.

4.1d22 - 2007-03-07

  - Added a new analysis method for creating a new field whose value 
    is determined by membership in a particular selection.
  - Added an item to the Windows menu to create a new text document 
    window.
  - Added the ability to create text labels to the Print Preview 
    window.
  - Added the ability to open part of a grid data file based on 
    containment within another layer or selection's extents, making
    it possible to load portions of grids that would not otherwise 
    fit in memory.
  - Added "select all" and "deselect all" buttons to the field 
    summary controls.
  - Added the ability to customize field number formats (see 
    http://java.sun.com/j2se/1.4.2/docs/api/java/text/DecimalFormat.html
    for the syntax).
  - Added a test for changes to the project file list, so users don't
    accidentally lose files they've added to the current project.
  - Modified the way field names are abbreviated to accomodate the 
    limitations of the dbf file format, making it easier to tell 
    fields apart when opening My World's shapefiles in ArcView.
  - Added checks to make sure we don't try to save values that are 
    too large or too small in a decimal field in a dbf file.
  - Improved the intelligence of the code for computing how many 
    integer and decimal places are required for decimal fields in 
    dbf files.
  - Reduced the number of decimal places in lat/lon editor fields 
    from six to five.
  - Modified the computed area and perimeter fields to enable users 
    to change their value format as well as their units.
  - Fixed bug in opening the Edit Data Libraries window.
  - Fixed bug in adding and removing records from tables whose rows
    and columns are exchanged (especially affected Get Info windows).
  - Fixed problems with large numbers of error dialogs being shown 
    when users open a WMS layer when they're not connected to the 
    internet.
  - Fixed bug in attempting to copy appearance information to the 
    result of a dissolve operation.
  - Fixed bug in formatting dates.

4.1d21 - 2007-02-28

  - Added the ability to exchange rows and columns when viewing 
    layer tables.
  - Added the ability to lock project files when they're saved.
  - Added the ability to open any layer as a collection, by right-
    clicking on it in the Data Library.
  - Fixed problem with "pretty" field names not being displayed in 
    the Data Library, file merge dialogs, and other places.
  - Modified interactive selection (i.e., the marquee and lasso 
    tools) to work in a background thread when operating on 
    extremely large layers.
  - Improved the handling of dates before 1600.
  - Modified date formatting to always print dates and times in 
    ISO 8601 format.
  - Modified the way grid layers are treated as feature layers 
    internally, to reduce the amount of memory they take up at a 
    slight expense in speed.
  - Redesigned the way layer data file information is collected and 
    stored internally.
  - Improved support for 16-bit UTF encodings.
  - Modified field creation procedure to handle out of memory errors 
    more gracefully.
  - Modified the procedure for testing for the intersection of very
    large polygons.
  - Fixed problem with numbers being mysteriously appended to the 
    end of layer names.
  - Fixed bug with custom units not being properly loaded from files.
  - Fixed potential problems with shutdown procedure that could 
    have caused My World to hang while quitting.
  - Fixed serious performance problem with creating a lot of new 
    fields all at once (such as with copy values operation).
  - Fixed a bug in wrapping polygons with an edge that runs exactly
    along the dateline.
  - Fixed problem in child windows that was causing the pop-up layer 
    control panel of the bottom layer to extend offscreen.
  - Fixed bug in reading THREDDS and NetCDF grids in the Lambert 
    Conformal Conic projection that use a false easting and/or 
    northing. 
  - Fixed typo in scatter plot axis labels.
  - Fixed problems with Countries data.

4.1d20 - 2007-02-05

  - Added a button to bring up the chart properties dialog to all 
    graph windows, so users don't have to use the contextual menu.
  - Fixed bug in computing the union of input features other than
    polygons to buffering operations.

4.1d19 - 2007-02-01

  - Moved network layer importers to a single dialog, to clean up 
    the file menu.
  - Modified the selection code to prevent the creation of two 
    identical selections, which caused My World to become very 
    confused.
  - Modified buffering to compute buffers in projected coordinates, 
    but compute the union of buffers in geographic coordinates, to
    prevent precision limitations from moving points slightly and 
    causing buffer polygons to self-intersect.
  - Modified the data and preferences installer to accept files 
    called "InstallerData.zip" and "InstallerPreferences.zip", so 
    that users won't think they need to install the files themselves.
  - Modified the code that calls the JTS library to automatically 
    validate and repair the geometry of polygons as they're passed
    to and returned from the library.
  - Modified child windows to close automatically when the project 
    is closed.
  - Added era (BC/AD) field to the date editor.
  - Removed "excluding missing value" from analysis result 
    descriptions.
  - Fixed bug in parsing invalid date values.
  - Fixed bug in calculating the default sampling interval for 
    vertical profiles.
  - Fixed bug that was causing a "duplicate files in index" error 
    when opening the same project twice in the same session.
  - Fixed bug in histogram panel that would cause the chart to become
    really messed up when the minimum and maximum values are equal.

4.1d18 - 2007-01-29

  - Switched polygon topology library from my own code to the open-
    source JTS library, which seems to be much more robust, though it 
    does lack precise progress tracking.
  - Added the ability to debug changes to properties file while 
    translating without rebuilding the jar file.
  - Added layer importer for NWIS site information.
  - Modified the units menu so that changing selected units doesn't 
    auto-convert the units of the current value, because many users 
    found the auto-conversion unexpected and frustrating.
  - Modified summary operations so that "average" is the default 
    operation, rather than "sum".
  - Fixed bug in searching tables with null values.
  - Fixed bug in formatting x-axis labels in graphs involving dates.
  - Fixed bug that caused the radio buttons in layer selection lists
    to behave more like checkboxes.
  - Work around Java bug in color choosers with customized chooser 
    panels whose ComponentOrientation is not UNKNOWN.

4.1d17 - 2007-01-18

  - Completed changes necessary to support right-to-left languages.
  - Fixed bug that was causing the splash screen not to re-open 
    after launch.
  - Fixed bugs in polygon and polyline clipping caused by debugging 
    code that was supposed to be removed before release.

4.1d16 - 2007-01-12

  - Added support for the Oblique Mercator projection (though it's
    not listed by default in Visualize mode's projection menu).
  - Modified the calculation of polygon area so it deals more 
    gracefully with problematic input.
  - Modified the grid layer editor to automatically select newly 
    created fields for editing, instead of making the user do it.
  - Modified the grid layer editor to copy appearance settings to 
    a new field created by duplicating an existing field.
  - Modified the splash screen to close automatically when My World 
    is finished, rather than moving behind the main window.
  - Disabled transparent image acceleration because it caused 
    strange problems with the color chooser.
  - Fixed multiple bugs in polygon intersection, union, subtraction,
    buffering and clipping.
  - Fixed units bug in shapefile unprojection.
  - Fixed bug in copying math operation results into an existing
    field.
  - Fixed bug in editing multipoint layers.
  - Fixed bug in computing bounding rectangles that sometimes caused
    the "zoom to all" and "zoom to layer" buttons to behave 
    strangely.
  - Fixed problems that made copying appearance settings from one 
    field of a grid layer to another very, very slow.
  - Fixed bug in buffering using linear units in a geographic 
    projection.
  - Fixed behavior of "transparent unselected" highlight mode when 
    no selection is highlighted.
  - Fixed bug that would sometimes cause multiple layers to become
    selected simultaneously after opening a project.

4.1d15 - 2006-11-16

  - Added the ability to register My World for all users of a 
    computer.
  - Modified the installer to honor the read-only attribute of files
    installed from InstallData.zip.
  - Fixed multiple bugs in clipping line layers.
  - Fixed bug in changing effective type of text field to number 
    when the numeric values are large.
  - Fixed bugs in computed fields for ascii grid layers.

4.1d14 - 2006-11-13

  - Fix bug in reading default preferences when the user does not 
    have write permission for the application folder.

4.1d13 - 2006-11-08

  - Redesigned server layer import to use new web application.
  - Added new mode for polygon buffers that behaves like ArcView's
    polygon buffer.
  - Added support for ArcIMS image services that use the Transverse
    Mercator projection.
  - Improved startup performance by caching data library entries.
  - Reduced the amount of memory retained by data library entries.
  - Added My World-native window for viewing text files (similar to
    the one for image files) -- but the implementation is currently 
    not complete.
  - Added the ability to use grid selections as arguments to polygon
    set operation analysis tools (they are automatically converted to
    polygons by selection boundary).
  - Changed the secondary selection color from red to magenta.
  - Redesigned the way layer appearances and map views are stored in 
    memory, to be more efficient.
  - Modified the field summarization controls, to be more clear about
    what exactly is being selected.
  - Changed the project settings and project files dialogs from modal
    to non-modal.
  - Modified project file behavior to open project files in My World
    when possible (like we do with other linked files).
  - Modified behavior of double-clicking myl files to show an error 
    message when My World is unable to find the associated data file.
  - Consolidated code for handling non-modal dialogs.
  - Consolidated code for handling links.
  - Removed the unnecessary "Close" button from some windows.
  - Removed unnecessary file index-related methods from File menu.
  - Changed strings to be more consistent about calling the 
    application "My World GIS" instead of just "My World".
  - Began making changes necessary to support right-to-left 
    languages.
  - Fixed bug in saving grid layers with multiple fields with the 
    same name.
  - Fixed bugs in annotation layer editor introduced in 4.1d7.
  - Fixed problems with new selection behavior in child windows.
  - Fixed problems with inconsistent coordinate rounding on PCs and 
    Macs that caused some polygon layers to look different on 
    different platforms at reduced scales.
  - Fixed minor problem with mouse mode button behavior.
  - Fixed bug in setting the update interval of the Day/Night layer.
  - Fixed bug in editing the color of categorical grid values in Edit
    mode.

4.1d12 - 2006-10-18

  - Added operations to combine grid layers and to merge shape 
    layers.
  - Improved the efficiency of spatial relationship tests.
  - Improved the efficiency of changing a grid layer's dimensions 
    (dynamically resampling it).
  - Improved the efficiency of projecting grid layers by not 
    projecting cells that are hidden.
  - Improved the performance of copying values to and from grids.
  - Added new divided gray colorscheme to defaults.
  - Fixed bug that was causing layer control panel not to be updated 
    with changes to a layer's name or other settings.
  - Fixed bug in search/replace when replacing with an empty string.
  - Fixed multiple bugs in dateline wrapping in Conic and Azimuthal
    projections.
  - Fixed bug in projecting rhumb lines that cross the dateline.
  - Fixed bug in saving THREDDS datasets that don't specify a 
    data type.
  - Fixed typo in cubic foot units.
  - Fixed multiple bugs in grid dimensions editor.
  - Fixed bug in handling CSV or TSV layers that have lines missing 
    latitude and/or longitude values.
  - Fixed bug in computing distance of an object to itself (should 
    be zero, not positive infinity).
  - Fixed indentation of Selections in various analysis method menus 
    when their containing layer does not also appear in the menu.
  - Fixed potential type mismatch bug in importing fields from file.
  - Fixed bug that would occasionally cause an error in re-drawing 
    the map when a layer was removed.

4.1d11 - 2006-09-25

  - Added new pop-up layer control panels to child windows.
  - Added a new top-level organizational category for My World server
    layers (currently called "Activity", but likely to be renamed).
  - Added detailed information log to progress window (currently only 
    used by selected operations).
  - Improved the threading behavior of importing shape and grid 
    layers from remote sources.
  - Improved the efficiency of layer table updates.
  - Added the ability to import Thredds datasets as collections, for
    those datasets that are too large to import as layers.
  - Added several new categories of units.
  - Fixed bugs in memory size limitation that could cause thrashing
    in some configurations.
  - Fixed bug in inverse distance weighted interpolation.
  - Fixed bug in getting the selected item from layer selection menus 
    not currently on screen.
  - Fixed bug in the computed latitude and longitude of projected 
    grid cells.
  - Fixed bug in sorting tables with missing values.
  - Fixed bug that was sometimes causing the selection lists in layer 
    control panels to get out of sync.
  - Fixed bug that was causing "uniform" menu item in layer control 
    panels not to be updated.
  - Fixed bug that could sometimes cause error dialogs to get stuck 
    behind the main My World window.
  - Fixed bug that was causing some temporary files not to be 
    deleted.
  - Fixed bug that was causing the current mouse mode to change 
    unexpectedly in Edit mode.
  - Fixed bug that was causing Thredds import dialog settings not to 
    be saved in preferences.
  - Fixed problems with certain types of unit information not being 
    loaded.
  - Fixed bug in shapefile unprojection.

4.1d10 - 2006-09-01

  - Redesigned child windows to work better with WorldWatcher 
    curriculum.
  - Redesigned the print preview window to use new interface 
    conventions.
  - Modified the status bar to hide map-related details in Analyze 
    mode.
  - Fixed several possible memory leaks.
  - Fixed singular vs. plural problems with the display names of 
    several types of units.
  - Fixed bug in the updating of "uniform" menu items in layer 
    control panels.
  - Fixed problem with layer control panels flickering when entering
    visualize mode.
  - Fixed problems with views in child windows not being updating 
    with changes to their layer.
  - Fixed several problems with selection highlighting behavior.
  - Fixed bug in "printing" to file introduced 4.1d7.
  - Set the highlight mode of all grid layers in the included
    data to new "dim unselected" mode.

4.1d9 - 2006-08-25

  - Added the ability to download a layer template (an empty layer)
    from a server, enter data, and upload that data back to the 
    server.
  - Got rid of the "Edit" column in the editor for shape layer 
    tables.
  - Improved the efficiency of managing a large number of newly-
    created fields.
  - Made "dim unselected" the default highlight mode for grid layers.
  - Modified WorldWatcher file support to enable My World to open 
    categorical WorldWatcher files with invalid category indices.
  - Redesigned the vertical profile tool's settings dialog.
  - Fixed problems with the threading behavior of import data (join) 
    operation.
  - Fixed a bug in Edit mode that was wasting time saving changes to
    layers that were being disposed of.
  - Fixed some problems with URL encoding.
  - Fixed some problems with tool behavior and control panel 
    appearance in Alternate Interface B.
  - Fixed a bug in the table search panel that was causing the 
    selection mode of layer tables to be set incorrectly.
  - Fixed bug in reading text data files whose delimiter was also a 
    whitespace character (such as the 'tab' character).

4.1d8 - 2006-08-17

  - Added support for parsing WMS server capabilities, selecting the
    desired projection from a menu, and turning constituent layers 
    within a WMS layer on and off.
  - Added support for ArcIMS image layers (currently only those that
    use the Geographic projection).
  - Added search capability to layer table windows.
  - Added search and replace capability to the field editor in layer 
    information windows.
  - Added support for opening local NetCDF (.nc) files.
  - Added a highlight rectangle to child windows to show the area
    being displayed by the main map (so child windows can act as an
    overview of the main window).
  - Added support for WMS servers that can only produce images in PNG
    format (My World prefers JPEG).
  - Redesigned the New Layer dialog.
  - Redesigned the field summarization editor panel (used in both the
    Summarize and Copy Values analysis methods).
  - Modified the copy appearance button to make it much easier to 
    copy a single field's appearance to multiple target fields.
  - Improved error handling when reading data library files.
  - Added backwards-compatable units information to saved 
    projections, so that grids created in 4.1 display properly in 
    version 4.0.
  - Modified layer table sorting so that the "waiting" cursor is 
    displayed while My World is working to sort the records.
  - Fixed progress bar behavior for grid resampling analysis method.
  - Fixed thread-related bug that could occur when the user added a 
    layer to the map while the startup thread was still loading data 
    libraries.
  - Fixed race condition in asynchronous loading from image servers.
  - Fixed bugs with Thredds grid layers with descending x or y axes.
  - Fixed bug in reading Thredds grid layers with no times and/or 
    z levels.
  - Fixed bugs in computing Thredds grid layer boundaries.
  - Fixed bugs in resampling 0-360 grids to -180-+180.
  - Fixed bug in saving a link to Line or Polygon ArcIMS feature 
    data.
  - Fixed bug in saving a link to ArcIMS feature data for parent 
    layers with multiple sublayers with the same name.

4.1d7 - 2006-07-25

  - Redesigned the toolbar, layer list, and layer control panel 
    interfaces.
  - Redesigned the layer information window, moving some layer 
    settings (such as grid projection) to the information window 
    from the layer appearance window.
  - Added new "Add Layer" dialog, with support for new "Data 
    Collection" concept - allowing users select a subset of a dataset
    to add to the map, instead of adding the entire file.
  - Redesigned the map rendering system for better performance and 
    flexibility.
  - Added new analyze mode for adding a field to a layer by computing
    distance.
  - Added a new system of units for numeric fields, so users can 
    change the display units of fields.
  - Added new "Dim Unselected" selection highlighting mode (for grid
    layers only).
  - Redesigned the status bar, giving more detailed startup 
    information while My World is loading data libraries.
  - Added support for Point Observation datasets in THREDDS.
  - Added dialog for importing image files, so users can set 
    projection and world file parameters before adding layer to the 
    map.
  - Added the ability to give child windows a different projection 
    than their parent window.
  - Made it possible to save changes to computed field units, now 
    that values can be converted.
  - Added stronger distinction between Geographic projection (which 
    projects to angular units) and other projections (which project 
    to linear units).
  - Improved the date value editor, allowing users to type in values
    directly.
  - Modified legends so that they are always sorted in the order 
    their layers appear in the layer list.
  - Modified all charting to use the JFreeChart library, which 
    produces much better-looking charts than the old charting code.
  - Modified license manager to make it easier to change the default 
    license and to allow users to upgrade using a trial version key.
  - Added unit information to numeric value entry fields in analyze
    mode.
  - Modified the way computed fields are added to grid layers, so it
    works the same way as computed shape layer fields.
  - Refactored the layer input & output method classes, adding a new,
    unified system for loading both static and dynamic image layers.
  - Upgraded to the latest version of the JavaApplicationStub on Mac
    OS X, fixing the problems with Mac OS X version 10.3.9, and 
    making My World and its installer Universal Binaries.
  - Fixed problems with flickering after making lasso and marquee 
    selections.
  - Fixed bug in opening a layer with a display aspect using a 
    categorical field with no values in it.
  - Fixed bug in computing the distance between a point and a polygon
    when the polygon contains the point.
  - Fixed bug in child windows that would sometimes cause legends in
    the child and parent windows to display different values.
  - Removed some stray debug code from ArcIMS support.
  - Fixed bug in pluralizing words ending in 'ch'
  - Fixed bug in computing polygon areas that would sometimes give 
    different values for a large polygon and the sum of all smaller
    polygons it contained.
  - Fixed bug in detecting 2-byte UTF character encodings in text 
    files.
  - Fixed a bug in editing shape layers with more than one record 
    without an associated shape.
  - Added a test to ensure that users don't create point layers with
    records that have no associated points in edit mode; My World is
    not able to save such layers.
  - Improved error handling when saving and loading project files.
  - Improved handling of corrupt license key files.
  - Added explicit handlers for OutOfMemoryErrors, to make behavior 
    as graceful as possible.
  - Fixed bug in computing the geographic extent of computed grid 
    layers.
  - Fixed bug in copying projection information to grid layers 
    created from grid selections (was re-using parent's projection
    instead of duplicating it).
  - Fixed bug in print preview window that would sometimes cause the
    scale bar to become much too wide.

4.1d2 through 4.1d6

  (These internal-only releases were made to evaluate experimental
   changes to My World's interface. Notes for any of those changes 
   we elected to keep are included in the notes for 4.1d7 above.)

4.1d1 - 2006-04-07

  - Added experimental changes to layer list interface.
  - Implemented interactive selection naming for marquee and lasso
    selections.
  - Implemented live link to ArcIMS data (now the default behavior).

4.0.2 - 2006-03-29

  - Fixed bug in computing shared-vertex intersections of 
    perpendicular line segments.
  - Fixed bug in polygon subtraction.
  - Fixed bug in reading GPX data files.

4.0.1 - 2006-03-13

  - Changed the codec used to compress the introductory video so
    Windows users don't need the latest version of QuickTime to
    view it.
  - Fixed the global wind patterns data file (was corrupted).
  - Fixed minor bug in computing holes in buffers.

4.0 final - 2006-03-01

  - Improved the efficiency of the clipping operation.
  - Modified data library behavior so that a file not found when the 
    library is opened is removed from the library.
  - Made small improvements in window behavior on multiple-monitor 
    systems.
  - Fixed bug in restoring a Map View in which the highlighted 
    selection has been deleted (introduced in b10).
  - Fixed bug in propagation of NaN values in computing statistical
    field math operations.
  - Fixed bug in the creation of new fields for grid layers.
  - Fixed bug in handling empty .wwf and .asc folders.

4.0b10 - 2006-02-27

  - Added the ability to have My World's installer install files to 
    the My World data folder or preferences folder without having to 
    package the files inside the installer.
  - Modified Map Views so that they don't save selection data (i.e.,
    changing Map Views will no longer cause selections to appear 
    and/or disappear from layers).
  - Fixed a bug in computing the union of polygons with certain 
    types of shared-vertex junctions (due to a typo).
  - Fixed bug that would sometimes cause the Map not to repaint when
    its layers were re-ordered.

4.0b9 - 2006-02-21

  - Modified non-interactive vertical profile so it combines 
    polyline segments end-to-end before generating the profile,
    and ignores missing-value values as set in Layer Information.
  - Modified the startup procedure so that additional indexed 
    folders are searched for Data Library files, as well as data 
    files.
  - Added dialog to the installer to set maximum memory size.
  - Added boundary-rectangle testing on line clipping, for major 
    performance improvement.
  - Updated to final version of GPS Import tool, and changed its
    name to "My World GPS Import".
  - Relaxed the standards for testing for projected data a little 
    bit, to reduce false positives.
  - Fixed two data files that had points outside the bounds of 
    proper geographic coordinates.
  - Fixed problems with welcome window rendering on Mac OS X.
  - Fixed bug that caused the top of some pop-up menus to disappear
    behind the menubar on MacOS X for real this time, and added fix 
    to keep menus from going behind the dock as well.
  - Fixed bug in saving categorical appearance information that 
    would cause settings for values with more than one space in a 
    row to be lost.
  - Fixed bugs in choosing appearance by a link field.
  - Fixed bug in saving project files caused by multiple layers 
    having the same name
  - Fixed bug in computing the union of two polygons that are not 
    adjacent, but share two or more vertices in common.
  - Added introductory video tour.

4.0b8 - 2006-02-07

  - Modified the Buffering operation so that buffers are computed in
    projected coordinates (of the Map's current projection).
  - Added "Or" to the Select By Value tool as method of combining 
    queries.
  - Improved the speed of computing buffers.
  - Added a preference setting to disable the welcome window.
  - Changed the default memory setting from >512MB to 256MB.
  - Modified ArcIMS data importing to load data asynchronously.
  - Improved the efficiency of projecting rhumb and great circle 
    lines, especially at small scales.
  - Changed the behavior of the re-center projection tool to be less 
    confusing.
  - Modified data file loading to display an error dialog when the 
    data is definitely projected.
  - Modified graph windows so they close when their associated 
    layers are removed from the map.
  - Added acknowledgment of I-GIS grant to splash screen.
  - Added instructions for re-opening to the welcome window.
  - Added an explanation for why My World needs to save a new copy 
    of data to the save imported file dialog.
  - Added a preference to turn off the "Import from URL" menu item 
    (now off by default).
  - Modified the File menu so that the "Import from ArcIMS" item is 
    always present, but is disabled when the functionality is not 
    available.
  - Added welcome window item to the Help menu.
  - Changed menu item from "Print" to "Layout & Print".
  - Fixed more tolerance-related bugs in polygon buffering, 
    intersection, union, and subtraction.
  - Fixed bug in switching directly to "Convert Selection to Layer" 
    analysis operation from a Selection window.
  - Fixed bug that caused the top of some pop-up menus to disappear
    behind the menubar on MacOS X.
  - Fixed several memory leaks in Edit mode.
  - Fixed memory leak caused by improper handling of window-close 
    events.
  - Fixed bug in wrapping grids to the spherical Transverse Mercator 
    projection.
  - Fixed problems with grid appearance in the Robinson projection.
  - Fixed bug in interactive vertical profile windows.
  - Fixed long-standing bug that would leave data in project files,
    even after the layer associated with that data had been deleted.
  - Fixed bug in resampling grids to a coarser resolution.
  - Fixed bug that was causing the main window to cover up Tour 
    windows.
  - Fixed typos in HTML introduction.

4.0b7 - 2006-01-30

  - Added meters to the units menu for Buffering, and removed 
    degrees (which doesn't really make sense there).
  - Improved the speed of some clipping operations by using bounding 
    rectangle tests.
  - Fixed a number of bugs in polygon buffering, mostly due to My 
    World's fixed tolerance being too large for some datasets, by 
    computing an adaptive tolerance value for the data at hand.
  - Fixed a bug in polygon intersection that would sometimes cause 
    an OutOfMemory error due to an infinite loop.
  - Fixed bug in display of computed field units.
  - Fixed bug in editing grid data at resolutions other than their
    native resolution that was causing changes not to be saved.
  - Fixed bug that could cause grid layer fields' data to be 
    interchanged when a field was deleted from a grid layer.
  - Fixed typo in GPX file association on Mac OS X.
  - Added new "Example Projects" data library.
  - Updated tours.

4.0b6 - 2006-01-20

  - Modified behavior of math operation copying values into an 
    existing field so that field's appearance settings are preserved.
  - Improved the speed of aggregating changes to a layer's data.
  - Added a dialog to notify user when license key registration is 
    completed successfully.
  - Modified math operation to copy the second operand's appearance 
    if the first operand is a constant value.
  - Modified the "save project as..." dialog so that the "compress 
    into single file" button is checked by default.
  - Modified the behavior of tour windows so that they no longer 
    float above the main window.
  - Disabled maximum heap size-setting on Unix, because it appears to
    be broken.
  - Fixed a bug that was causing layers to be marked as modified when
    the weren't.
  - Fixed a bug that made it possible for a Selection to be selected
    even when it wasn't visible.
  - Fixed a bug in computing Natural Breaks.
  - Fixed a bug in computing inner and surrounding buffers.
  - Fixed a bug in buffering certain shapes with two left edges very 
    slightly offset from one another.
  - Fixed bug that was causing multiple Tour windows to appear in the
    Windows menu.
  - Updated Thredds libraries to latest version: 2.2.12
  - Finished updating documentation.
  - Updated introductory and how-to tours.
  - Turned on the "Category List" legend for default data with name 
    information.
  - Added new sample project.

4.0b5 - 2006-01-13

  - Added the ability to have automatically-opening project-based 
    tours, with default tours for the four projects that are 
    distributed with My World.
  - Added a button and a menu item to launch the GPS import tool.
  - Added a menu item for connecting to the online activity center 
    to the help menu.
  - Added a link to the documentation on file indexing to the 
    duplicate files dialog.
  - Added the ability to give tour files a default window size.
  - Added a special link type in tours to re-open the welcome window.
  - Added new How-to tours and partially updated documentation
  - Updated about box copyright information.
  - Modified the ArcIMS import so the feature is disabled in trial 
    versions, and so that server URL's are saved across sessions the
    way Thredds server URL's are.
  - Modified icons for polygon buffer operation to make it more clear
    what the different radio buttons do.
  - Fixed "Save As..." for projects so that newly saved projects are 
    added to the "All Projects" data library.
  - Fixed a bug in linking files to a project.
  - Fixed bug in display of link fields in table windows.
  - Fixed several list-selection-related bugs in the Edit Data 
    Library window.
  - Fixed bug in tour windows scrolling to bottom when a new tour 
    file was opened.

4.0b4 - 2006-01-03

  - Modified the expiration dialog so that users can always enter a 
    new license code.
  - Modified the statistics window so the details label is hidden when
    no details are being displayed.
  - Changed the behavior of polygon buffering so it includes only the 
    buffer region, and not the entire interior of input polygons.
  - Restored the highlighting behavior of table windows, which got 
    lost somewhere along the line.
  - Fixed formatting problems with changing the effective type of 
    numeric fields to text.
  - Fixed a bug that was causing the code to become confused by empty 
    polygons it should have been discarding.
  - Fixed bug in "Save Layer..." for layers whose effective type has 
    been changed to a format their file type cannot store.
  - Fixed problems with "Zoom to Previous" and "Zoom to Next" when the
    size of the map changes.
  - Finally fixed the problem with project titles not changing when 
    the user selects "Save Project As...".
  - Removed some debugging code accidentally left in code for deleting
    selections.
  - Fixed bug in the Edit Data Library window that was causing the 
    remove data file button to be enabled even when no data file was 
    selected.

4.0b3 - 2005-12-13

  - Added new Data Libraries and projects, replacing the old ones.
  - Added the ability to create a selection by clicking on an item in 
    a categorical legend.
  - Added a preference setting for computer's physical RAM size to 
    prevent thrashing when My World requests more RAM than is 
    physically available.
  - Improved the error handling and reduced the timeout value for HTTP
    requests by WMS layers.
  - Modified grid layers to add new fields before computed fields, not
    after.
  - Updated intro screen image.
  - Modified the "New Field" operation to duplicate an existing 
    field's appearance along with its data.
  - Modified the math analysis operation to copy the target field's 
    name into the result name field, when a target field is selected.
  - Modified filename-checking to remove trailing spaces from 
    filenames (Windows doesn't seem to like trailing spaces).
  - Fixed bug in WMS layers that was causing them not to be notified 
    when their settings were changed.
  - Fixed bug in changing the resolution of grid layers containing 
    categorical data.
  - Fixed a bug in double-clicking on the "no selection" line in a 
    layer control panel's selection list.
  - Fixed bug in test for polygon intersection.
  - Fixed bug that caused links to break whenever a project was saved,
    until the project was re-loaded.
  - Fixed a bug that was causing the New Annotation tool not to work.
  - Fixed bug in saving appearance of layers with link fields.
  - Turned off image interpolation on MacOS X that was making grid 
    layers look fuzzy.
  - Fixed bug that was causing the HTML in the intro screen to appear
    incorrect initially.
  - Fixed bug in selecting from non-text fields using the table of 
    checkboxes.
  - Fixed a bug that was causing a "save changes?" dialog box to flash 
    on the screen briefly as My World was quitting.
  - Fixed the title of the edit layer appearance window for grid 
    layers.
  - Fixed the action description for buffering operation.

4.0b2 - 2005-12-02

  - Added an analysis operation to convert polygon layers to point 
    layers.
  - Replaced separate dot shape, size, color, and count for polygons 
    with a single "dot density" tab.
  - Eliminated the "More..." tab in layer appearance windows, making
    all options always visible.
  - Made the tour window floating.
  - Modified "getting started" text in the layer list.
  - Added a "Projection" sub-menu to the Project menu.
  - Added a label to the top of the data library pane to match the one
    above the layer list.
  - Added a fish symbol to the list of point symbols.
  - Added the ability to save a printed map in the current project.
  - Modified the appearance of the welcome screen to make it appear 
    more like a modal dialog, and to make it clearer that the links 
    are links.
  - Modified polygons to use area instead of number of vertices to 
    determine which polygon ring is the most significant.
  - Modified project saving so that the watch cursor appears while My
    World is busy saving a project.
  - Removed the word "Layer" from all analysis operation source labels.
  - Disabled the renaming of project-included files -- it can't be 
    undone if the user hits "Cancel", and it isn't necessary now that
    link text is separate from the file name.
  - Fixed bug in creating new point layers by analysis operations.
  - Fixed the data library tree to allow only single selection.
  - Fixed bug in displaying child window of grids whose units are not 
    specified.

4.0b1 - 2005-11-23

  - Added a splash screen with links to introductory materials.
  - Added the "guided tour" window that can step through specially 
    formatted html files.
  - Added the ability to create buffers surrounding the border of 
    polygons.
  - Added a distinction between point and multipoint layer types.
  - Added user-editable "pretty" names for project-wide linked files.
  - Added a "Select Dataset" button to the ArcIMS import dialog.
  - Moved the "All Data Files" data library to the bottom of the menu.
  - Added some new icons created by a graphic designer.
  - Moved the "drop files here" introductory text from the Map to the 
    Layer List.
  - Added My World's default data folders to the top of the list of 
    folders to search in the preferences window.
  - Added tooltips to numeric classification methods.
  - Added text at the top of Colorscheme and Edit Data Libraries 
    dialogs describing what they're for.
  - Fixed the behavior of selecting rows in a table by clicking and/or
    dragging on the row numbers.
  - Fixed a bug in the hand tool that would appear when the user 
    dragged from another window into the map with it.
  - Fixed the behavior of WMS layers that have been saved as static 
    images.
  - Fixed bug in computing the midpoint of a polyline with a single 
    segment.
  - Fixed a bug with metadata buttons in Edit Data Libraries dialog.
  - Fixed a bug in the table editor in Edit mode that would cause 
    multiple "Bad Value" dialogs to be shown.
  - Fixed several typos and capitalization errors in interface.
  - Fixed bug in displaying numeric fields with "NaN" as their missing-
    value number.

3.3d12 - 2005-11-11

  - Added support for reading feature data from ArcIMS servers.
  - Added a "Delete Field" menu item to the layer menu.
  - Added computed latitude, longitude, and area fields to grid layers.
  - Added "Declutter" and "Reset" (was "Re-Clutter") buttons to the 
    edit layer window for annotation layers.
  - Added a color swatch color picker with a transparency slider for
    editing missing-value colors.
  - Redesigned the status bar and made the scale display editable.
  - Modified the zoom out tool so it zooms out twice as fast as the 
    zoom in tool zooms in.
  - Modified lasso and marquee tools so that they select any feature 
    they touch -- not just features they completely contain.
  - Modified child window behavior so that the parent window (and, by 
    extension, any other open child windows) follow the child window's
    pan and zoom settings when synchronize is on.
  - Fixed problem with child windows where a mouse event in one child 
    window would not be re-dispatched to other child windows.
  - Modified the summarize analysis tool so it won't ask the user for a
    name for its result.
  - Fixed bug in automatic detail reduction that was causing ugly gaps 
    between some polygons at very large scales.
  - Fixed bug in the edit layer information window that was forcing 
    users to double-click to edit a value after editing any text 
    (thanks to David Smith for spotting this).
  - Fixed bug in computing minimum and maximum values, and natural 
    breaks and quatiles, when editing colors of a numeric grid layer 
    in Edit mode.
  - Fixed bug in saving ascii grid layers with non-numeric computed 
    fields.
  - Fixed bug in new field button in new layer dialog.
  - Fixed bug in changing the effective type of fields in grid layers.

3.3d11 - 2005-11-01

  - Added the ability to duplicate an existing field when creating a 
    new field.
  - Added the ability to access the eyedropper while using any other 
    tool by pressing the Alt/Option key to the grid layer editor.
  - Added a paint can tool to the grid layer editor.
  - Added the Concatenate categorical summary operation and improved 
    the clarity of summary operation strings.
  - Added pan and zoom controls to child windows that are available 
    when synchronize is off.
  - Changed the location where child windows appear from lower-right 
    corner to lower-left.

3.3d10 - 2005-10-26

  - Added new Summarize and Reclassify analysis operations.
  - Added the ability to copy math operation results into an existing 
    field instead of creating a new field.
  - Added a dialog for selecting an image file's projection when the 
    image is first imported.
  - Added the ability to save histograms & bar graphs.
  - Added more decimal places to number-editing fields where necessary.
  - Added bounding-rectangle checks to feature intersection & 
    containment tests to improve performance.
  - Modified the copy values operation to allow copying from selections
    as well as layers.
  - Improved handling of values outside the current colorscheme range 
    in numeric grid layer editor
  - Added units display to scatter plots.
  - Added support for less-common "grd" file extension for ascii grid 
    files.
  - Improved progress-bar behavior for selection set operations.
  - Improved the dissolve analysis operation icon.
  - Fixed bug that was causing map not to redraw when a layer was 
    dragged to a lower position in the layer list.
  - Fixed bug that made it impossible to save a layer (instead of using 
    "save as...") in some situations.
  - Fixed bug in summarize operation selection table that occurred when
    new fields were added to a layer.
  - Fixed typo in maximum summary method.
  - Fixed bug in saving grid layers with multiple fields that had 
    previously been saved with a single field.
  - Fixed bug in copy values operation that would cause it to lose its
    settings when the user switched inputs.
  - Fixed bug in edit appearance window for image layers that was 
    causing layer not to redraw after settings were changed.

3.3d9 - 2005-10-18

  - Modified the math operation analysis operation to allow the use of 
    constant values for all operations, and to permit computing new 
    fields only for a particular selection.
  - Modified math operation and copy values analysis operations to 
    select appropriate appearance settings for computed fields when 
    possible.
  - Modified map behavior so that My World automatically zooms to the
    extents of a newly-added layer when that layer has an associated
    projection.
  - Added editable background color to annotations.
  - Added a distinction between histograms (for numerical values) and 
    bar charts (for categorical values).
  - Modified the data library panel so that the show data documentation
    button is disabled for project files, which don't have metadata.
  - Modified default child window position.
  - Fixed problems with m3vz project file names changing to temp file
    names.
  - Fixed bug in changing grid resolution from the edit layer 
    appearance window.
  - Fixed bug in resolving duplicate-file-name conflicts with project 
    files.
  - Fixed bug that sometimes caused minimum and maximum values to 
    change improperly when grid resolution was changed.

3.3d8 - 2005-10-12

  - Added the Copy Values and Dissolve & Summarize analysis operations.
  - Modified the clipping operation so that computed field values are 
    not copied to the clipped records, but recomputed for the clipped
    features instead.
  - Modified shape layer loading to re-compute computed field values 
    whenever files are loaded.
  - Redesigned the interface for selecting how to dissolve buffers.
  - Improved the way My World determines whether analysis operations 
    should be enabled or disabled.
  - Fixed related bugs in buffering and polygon clipping that was 
    causing some polygons to be mistakenly excluded from the output.
  - Fixed bug in launching My World with a document by dropping it on
    the application in Mac OS X.
  - Fixed bug in polygon buffering that was including interior "hole"
    rings as if buffering polylines.
  - Fixed bugs in computing union of polygons when one polygon entirely
    contains the others.
  - Fixed bugs in copying and pasting shapes in Edit mode that were 
    introduced way back in 3.2d1.
  - Fixed bug in Edit Appearance window for Image layers (missing Apply
    button).
  - Fixed flickering problem with categorical legends.

3.3d7 - 2005-09-30

  - Added new analysis operation to clip points, lines, or polygons to
    the boundaries of a polygon layer or selection.
  - Modified the buffering analysis operation to give the user more 
    control over how buffers are dissolved.
  - Added support for reading GPX files (waypoints only).
  - Upgraded Thredds libraries to the newly-released version 2.2.10.
  - Added area to categorical field statistics.
  - Modified numeric legends so that the text shrinks first, before the
    color bar, when size is reduced.
  - Modified child windows so they respond to mouse clicks in their 
    parent window (only with the Arrow tool).
  - Modified the print map window so that the map uses the parent 
    window's background color instead of the default background color.
  - Added a red border around highlighted categorical legends.
  - Fixed area-weighted histogram axis labels to display area units.
  - Fixed bug in computing union of polygons which both overlap and 
    share exactly one vertex (was encountered as a problem with 
    buffering).
  - Fixed bug in Edit Appearance window for Annotation layers (changes
    were not being reflected by layer).
  - Fixed bug in computing layer bounds that would cause Edit mode to 
    complain that layers with empty records lied outside the range of
    the current projection.
  - Fixed bug in Edit mode that would cause the "Layer Outside of 
    Projection Range" dialog to be shown multiple times instead of 
    just once.
  - Fixed bugs in reading grid layer projections, to enable users to 
    save projected grids as WorldWatcher or ASCII files.
  - Fixed bug that could cause an analysis operation's menu selections
    to become invalid in certain circumstances.
  - Fixed bug in changing the projection settings for a grid layer.
  - Fixed bugs in finding which grid cell the user clicked on with the 
    Arrow and Get Info tools when the grid is a geographic grid not 
    centered at (0,0).

3.3d6 - 2005-09-16

  - Added a new system of license keys, so the trial version can be 
    upgraded to the licensed version.
  - Moved the synchronized mouse window menu item from the project 
    menu to the windows menu
  - Improved the synchronized mouse window by adding grid statistics 
    display and enabling the user to turn projection synchronization
    off and on.
  - Fixed a bug in editing shape layer tables.
  - Fixed a potentially serious bug in how the appearance of polygon
    layers is saved.
  - Fixed several bugs in dealing with project names (as set in the 
    project settings dialog).
  - Fixed a serious bug in computing the radius of the earth that was 
    causing all of My World's area calculations to be off by a factor 
    of 2.

3.3d5 - 2005-09-13

  - Changed the synchronized mouse window from a regular window to a 
    floating window.
  - Moved grid layer geometry settings from the Edit Information window
    to the Edit Appearance window.
  - Made resampling grid layers by changing the geometry parameters 
    operate much faster.
  - Modified numeric legends to set a maximum width for layer names, 
    so the color bar doesn't get pushed off the right edge of the 
    legend.
  - Fixed bug in grid layers that made it impossible to do math 
    operations.
  - Fixed multiple bugs in displaying lat/lon grid layers whose origin 
    is not at -90,-180 (thanks to Mike Taber for finding this one).
  - Fixed several bugs in the synchronized mouse window.
  - Fixed repainting problems with map auto-scroll.
  - Fixed bug in creating legends for numeric fields with zero or one
    distinct values.
  - Fixed bug in wrapping grid cell longitude around the dateline.
  - Added a work-around for a Java issue that was causing dialogs to be
    closed twice.
  - Removed some unused libraries and other files from the installer.
  - Reformatted and spell-checked the release notes file.

3.3d4 - 2005-08-31

  - Modified grid layers so that grid data may be  displayed at any 
    resolution.
  - Removed the distinction between projected and lat/lon grid layers,
    maintaining the best aspects of each's implementation. Lat/lon grid 
    layers will now draw much, much faster in the Geographic projection, 
    and projected grid layers may be viewed in a projection other than 
    their native one.
  - Added adjustable brush size to the grid paintbrush tool.
  - Added a "re-clutter" button to the annotation layer editor, to 
    return all annotations to the location of the map features they 
    point to.
  - Modified a number of analysis operations that create new layers so 
    that the appearance of the new layer matches its source.
  - Modified the synchronized mouse window to track the main window's 
    pan and zoom settings.
  - Modified world file parsing to be much less sensitive about what 
    type of line breaks (CR, LF, CR/LF) are used.
  - Improved the efficiency of writing ascii grid files.
  - Redesigned the way layer appearance is stored to be more efficient 
    and robust, and to allow copying appearances from one type of layer
    to another.
  - Fixed an oversight that left out the WMS file extension from the 
    list of file types that can be imported.
  - Fixed bugs in layer type display in the data documentation window.
  - Fixed a bug in computing histograms with user-defined minimum and 
    maximum values.
  - Fixed bug that was causing My World to create multiple, duplicate 
    boundary curves of certain shapes of grid selection.

3.3d3 - 2005-08-16

  - Added a new type of layer that can dynamically download image data 
    from an OpenGIS Web Mapping Service (WMS) server.
  - Added an extra area field to grid selection statistics.
  - Added a box around the project files link marker so it won't be 
    confused with a layer link marker.
  - Enabled weighting histograms by area for grid layers.
  - Changed the link marker from a google-style balloon to a flag.
  - Fixed grid layer editing to support boolean and link fields.
  - Fixed a bug that would cause clicking and dragging on a menu in a
    layer control panel to initiate a drag instead of selecting from 
    the menu.
  - Fixed bugs in editing the text of Annotations.
  - Fixed bug in closing the My World window that would cause My World 
    to ask the user if they wanted to remove each layer from the map.
  - Fixed bug in output format menu for graticule and day/night layers.
  - Fixed the title of the synchronized mouse window.

3.3d2 - 2005-08-11

  - Added an analysis operation for resampling grid layers to a new 
    resolution.
  - Added a window with "synchronized mouse", for comparing two grids
    by clicking and/or dragging.
  - Added improvements to select by value analysis method made by our
    summer intern, Ethan Johnson.
  - Improved the progress-bar behavior of interpolation.
  - Fixed bug in analyze mode that could occur when the user deleted 
    all numeric fields in a layer except for one.
  - Fixed a bug in saving dbf files with a numeric field whose values
    are all integers less than or equal to zero.
  - Fixed a bug in math analysis operation that would not allow math 
    operations on layers with exactly two numeric fields.
  - Fixed bug in repainting the color bar in the grid layer editor.
  - Fixed multiple bugs in computing numeric legend text width.
  - Fixed bug in handling floating-point values in dbf files written
    with a lower-case "e".
  - Fixed a bug in using the link tool on layers with polygons or 
    polylines that have no points in them.
  - Fixed potential bug in projecting grid layers for the first time.
  - Removed version-control folders that were accidentally included in
    the data folder.

3.3d1 - 2005-07-29

  - Added the ability to create and edit Grid layers.

3.2.1 - 2005-07-19

  - Modified the icon for displaying data documentation so that it no 
    longer resembles the icon for the "Get Information" tool.
  - Fixed a bug in several of My World's dialog boxes that would cause 
    errors and/or unexpected behavior when users closed the dialog box 
    instead of clicking on one of its buttons.

3.2 final - 2005-07-18

  - Modified selection creation so that when a selection is created, the 
    layer it was created in is scrolled to be visible in the layer list.
  - Improved the layout of the statistics window.
  - Fixed a bug in switching histograms from weight by area to weight by 
    count.
  - Fixed a bug in deleting a field used in an open scatter plot.

3.2b4 - 2005-07-12

  - Made the cursor location & other status bar messages left-justified 
    again.
  - Modified "New Project..." to re-set projection and zoom parameters 
    to their default values.
  - Fixed bug that made it impossible to view projected grid data from 
    Thredds.
  - Fixed bug that could occur when the user doesn't have permission to
    read from a directory in the data folder.
  - Fixed a bug that was causing links to appear even if their field was 
    not displayed.
  - Fixed a typo in several error dialogs (thanks to J. B. Churchill for 
    spotting this one).
  - Fixed a bug that would sometimes cause the titles of numeric legends
    to disappear.
  - Fixed a bug that would sometimes cause projects not to load properly 
    if their projection was not centered at (0,0).
  - Fixed bug that was causing the map view menu not to be re-set when
    the zoom to next or zoom to previous buttons were used.
  - Fixed a bug that was sometimes causing the map view menu not to be 
    re-set when a new project file was opened.
  - Added datum information to data documentation (where available).
  - Modified climatic averages datasets to take advantage of new 
    transparent missing-value feature for grid layers.
  - Upgraded to latest version of InstallAnywhere installer software 
    (7.0) and changed the name of the default installation folder to 
    "My World GIS 3.2"

3.2b3 - 2005-06-29

  - Added a "getting started" graphic that displays over the map in 
    Construct mode when there are no layers in the Map.
  - Separated saving charts to a file from saving them in the project.
  - Modified "Add New Fields From File" (join) so that imported data is 
    added to all existing records that match the input -- not just the 
    first one.
  - Modified the "New Field" dialog so that the Category menu has a 
    default selection of "Other".
  - Modified the Vertical Profile mouse mode so that it won't allow 
    users to attempt to make profiles of categorical fields.
  - Added a link balloon for project-associated files that appears in 
    the lower left corner of the Map.
  - Improved the appearance of the link balloon slightly.
  - Changed "Mouse Location" to "Cursor Location" and moved it from the 
    left side of the window to the right.
  - Fixed several bugs in reading saved layers with a selection 
    highlighted.

3.2b2 - 2005-06-24

  - Modified color appearance aspect editors so that the transparency of 
    missing-value colors is independent of the layer's transparency.
  - Modified the "Re-Center Projection" tool so that it won't cause the 
    map to move unexpectedly.
  - Modified the menus in Analyze mode so that Selections are indented 
    below their containing Layers.
  - Modified numerical legends so that their bars always line up.
  - Added a maximum width for categorical legends so the Map doesn't get 
    excessively shrunken.
  - Fixed bugs in opening saved charts from the "Project Files..." 
    dialog.
  - Fixed bugs in Edit mode that would sometimes cause My World to 
    refuse to open a new project.
  - Fixed bug in Print Preview legends - legends of invisible layers 
    should be invisible by default.
  - Fixed several bugs in dealing with bounding boxes that made taking 
    shapefiles from My World to ArcView problematic.
  - Fixed several lingering references to "Mapview" that should read 
    "Project" instead.

3.2b1 - 2005-06-17

  - Added the ability to save scatter plots and vertical profiles as 
    jpeg files.
  - Added the ability to store arbitrary files within the project file.
  - Changed the terminology used in the interface from 
    "Mapview"/"Appearance" to "Projection"/"Map View".
  - Added an "Are You Sure" dialog for every time the user removes a 
    layer, not just when the layer needs saving.
  - Fixed several more bugs in dragging layers in the Layer List that 
    could cause layers to be unexpectedly deleted.
  - Fixed bugs in dealing with clicks on missing values in numeric 
    legends.
  - Fixed a bug in creating a new annotations.
  - Fixed bugs in saving ascii grid files that was preventing ArcMap 
    from reading ascii grid files created by My World.
  - Fixed a bug in computing histogram bin boundaries.
  - Removed category folders from Data Libraries in list-by-file mode.
  - Fixed the tool tip of the interactive vertical profile tool.

3.2d8 - 2005-06-14

  - Added the interactive vertical profile tool in Visualize mode.
  - Added a "Map" menu with a dialog to edit map settings.
  - Modified mapviews so that background color is a property of the 
    individual mapview, instead of a global setting.
  - Changed the terminology used in the interface from 
    "Item"/"Attribute" to "Record"/"Field"
  - Made My World's method for resolving name conflicts in indexing 
    smarter.
  - Made indexing cancelable, so users can stop indexing without having 
    to resolve each name conflict individually.
  - Modified auto-scroll to move more slowly, since drawing is faster 
    now.
  - Modified the startup sequence so My World now searches the data 
    folder 
    for idx files, in addition to the preferences folder.
  - Increased the size of the analysis result description in Analyze 
    mode.
  - Modified the Data Library so that double-clicking on a folder will 
    add a layer to the Map.
  - Modified the Layer List to allow adding multiple copies of the same 
    layer (with a warning dialog).
  - Fixed bug in categorical legends that made it impossible to change 
    the appearance of the map in some circumstances.
  - Modified measurement tool so that pressing the escape key cancels 
    measurement.
  - Fixed several bugs in saving layer settings with named map 
    appearances.
  - Modified the way links are saved to save links to non-included files 
    relative to the My World application, instead of as absolute paths.
  - Fixed bug in opening Mapviews from the Data Library, that could 
    cause an outdated version of the Mapview to be loaded.

3.2d7 - 2005-06-08

  - Added google maps-style balloons over linked features when the link 
    tool is selected.
  - Vastly improved the efficiency of mapping categories to appearance 
    values for large categorical attributes. 
  - Modified the file icons used on MacOS X so they look like real MacOS 
    X icons.
  - Fixed a bug in dragging layers in the Layer List that would 
    sometimes cause layers to be unexpectedly deleted.

3.2d6 - 2005-06-03

  - Added support for multiple named, saved map appearance settings.
  - Modified the new mapview format to be more compatible with old 
    versions.
  - Updated to most recent NetCDF libraries (2.2.09).
  - Fixed bugs in dealing with "File Not Found" errors when saving 
    linked files in a mapview.
  - Fixed bug in using "Import File..." outside of Construct mode.
  - Fixed bug that was causing the pop-up window for the Get Information 
    mouse mode not to appear.
  - Fixed bug in displaying the new "Duplicate Files In Index" message 
    when the more recently indexed file is locked.

3.2d5 - 2005-05-17

  - Modified vertical profile analysis operation to compute a reasonable 
    initial value for the sampling interval.
  - Modified both vertical profile and scatter plot windows so they no 
    longer automatically resize whenever the selection changes.
  - Modified the "duplicate files" dialog box to appear less alarming.
  - Vastly improved the efficiency of building density grid layers.
  - Fixed bug in opening Print Preview window for a map containing a 
    layer with more than one legend.
  - Fixed possible bug when closing a mapview.
  - Fixed a bug that was causing the "Zoom To Selected" button to be 
    enabled when it shouldn't be.

3.2d4 - 2005-05-06

  - Added the ability to create vertical profiles of grid layers along 
    line features (the icon for this operation was added in 3.2d2, but 
    it is only now implemented, in 3.2d4).
  - Added the ability to select individual points or groups of points in 
    scatter plots and see their associated information in a table.
  - Improved the granularity of progress bar tracking when opening 
    zipped mapview files.
  - Fixed a bug where opening Planar (band-sequential) TIFF files or 
    TIFF files with more than three bands would fail without giving an 
    error message.
  - Fixed a bug that was causing My World's temporary files not to be 
    deleted.
  - Fixed a possible division by zero bug when the colorschemes folder 
    is empty (thanks to Meridith Bruozas for finding this one).

3.2d3 - 2005-05-04

  - Reduced the amount of time My World wastes trying to draw Layers 
    that are turned off.
  - Fixed a bug in Analyze mode that caused analysis operations not to 
    be enabled and disabled as they should have been when Selections 
    were created or deleted.
  - Fixed a bug in drawing gradient icons.

3.2d2 - 2005-05-03

  - Added the ability to generate scatter plots (currently the plots are 
    non-interactive).
  - Improved the speed of drawing grid layers by 25-80%, depending on 
    the projection (cylindrical projections are fastest).
  - Redesigned the way Map drawing is buffered, for much better 
    responsiveness.
  - Added minimum and maximum scale properties to each Layer, so that a 
    Layer can automatically show and hide itself when the scale gets 
    above or below a certain threshold.
  - Modified the Edit Layer Information so that metadata, the locked 
    property, and minimum and maximum scales can be edited for any 
    Layer, not just Shape and Grid Layers.
  - Modified legends so that the legends of the selected Layer are 
    highlighted just like the Layer's control panel.
  - Added a preference setting that will cause My World to search 
    folders in addition to the "data" folder for data files at startup.
  - Fixed bug in the File menu ("Save" and "Save As" menu items had the 
    same name).
  - Fixed bug in Analysis mode menus that could sometimes cause an 
    invalid layer to become selected in certain operations.
  - Fixed bug in saving layer files that was causing most appearance 
    settings not to be saved.
  - Fixed a bug in the handling of the "Lock Layer Data" button in the 
    Edit Layer Information window.
  - Fixed a bug in projecting Point layers with more than one point per 
    record.
  - Fixed a bug in editing newly-created (empty) layers.
  - Fixed a long-standing annoyance in the Thredds catalog browser with 
    twisting down catalog reference folders. 

3.2d1 - 2005-04-21

  - Redesigned the way layers are handled, enabling My World to display 
    two or more views of the same map simultaneously, and to load 
    Mapviews in a background thread, allowing the loading to be 
    cancelled.
  - Added a "Print Preview" window, where the user can lay out the map 
    and add legends, a scale bar, and a compass rose to the map before 
    "printing" it.
  - Modified the way categorical legends are arranged so they can be 
    stacked, taking up less screen space.
  - Modified the way Selections are managed, allowing them to be saved 
    in layer files.
  - Modified the Layer List so that only Selections that are part of the 
    selected Layer may be selected.
  - Increased the threshold for "are you sure?" dialog for tables from 
    10,000 cells to 100,000 cells.
  - Fixed possible bug in displaying symbols for polygon layers with 
    empty polygons.
  - Fixed several problems with symbol icon sizes in legends.

3.1d3 - 2005-04-15

  - Added "Select All" and "Select None" buttons to multi-field math 
    operation analysis method panel.
  - Modified multi-field math operations so their description strings 
    don't get too long.
  - Fixed a classpath problem in the Mac OS X version of the 
    application.

3.1d2 - 2005-03-17

  - Updated to latest Thredds and NetCDF libraries to support Thredds 
    catalog version 1.0.
  - Added a checkbox to the preferences dialog to enable Thredds data 
    access.
  - Redesigned the interface of the "Math Operation" analysis method, 
    and added statistical (mean, median, min, max, std. deviation) 
    operations.
  - Fixed a minor bug in projecting large, circular polygons with Conic 
    projections.

3.1d1 - 2005-03-14

  - Internal-only release. Notes included above with 3.1d2.

3.0.3 - 2005-03-14

  - Made the text data importer a little smarter by having it make an 
    initial guess as to which columns contain latitude & longitude.
  - Modified the documentation to point to the new online help center 
    for information on how to use Microsoft's TerraServer.
  - Added items to the help menu to connect to the new online help 
    center and online data center.

3.0.2 - 2005-02-17

  - Added an "Import Text Data" window where the user can select which 
    columns contain Latitude and Longitude, skip lines at the top of the 
    file, and select the delimiter for files with the "txt" extension.
  - Added an "All Data Files" filter to the "Import Data" file chooser, 
    so users don't have to select what type of data file they're looking 
    for before choosing a file.
  - Modified the Import Data function in Construct mode so that it only 
    adds imported files to the "All Data Files" Data Library, and 
    selects the file in the Library after importing.
  - Added the line number to the parse error message for text data 
    files.
  - Fixed problems in dealing with BC dates in shapefiles.
  - Fixed a problem with the volcano name and dating method fields in 
    the Earth Structures Inquiry mapview.
  - Fixed bug in polygon union for separate polygons with a single point 
    in common.
  - Fixed bug in reading dbf files with missing values in a date field.
  - Improved the formatting of error log output.

3.0.1 - 2005-01-26

  - Fixed bug in saving point Layers with records that have no 
    associated points.
  - Fixed bug in editing point Layers that was causing points not to be 
    drawn.

3.0 final - 2005-01-24

  - Modified image layer readers so that files with bad projection 
    and/or transformation information can still be opened.
  - Modified the way Edit mode builds layer editors so that the 
    "waiting" cursor will appear.
  - Fixed the EarthStructuresInquiry example mapview so that earthquake 
    layer selections are visible by default.
  - Fixed several typos in the interface (e.g., "Substract", 
    "Aggreate").
  - Fixed a bunch of typos in the documentation.

3.0rc2 - 2005-01-20

  - Added new "Help" menu and moved the "About My World..." and 
    "Help..." items to it from the "Windows" menu.
  - Added a "Layer List" label at the top of the Layer List.
  - Increased the number of different categories used for numeric 
    attributes from 6 to 16.
  - Changed the name of the file used to store installation date 
    information for the trial version.
  - Replaced the "gulfcoast.tif" example data file with a new one whose 
    source is known.
  - Modified Edit mode so that starting to edit a hidden Layer will make 
    that layer visible.

3.0rc1 - 2005-01-19

  - Modified Layer/Selection Table export to csv/tsv file so that it 
    writes attribute names at the top of the file.
  - Modified dbf file output to write the (undocumented) code page 
    information, so Visual FoxPro can read the file.
  - Improved the layout of the Edit Layer Information window.
  - Added 2000/2004 presidential election data to distribution.
  - Split the Countries layer into two versions, removing demographic 
    trends data from the main Countries layer to make it easier to work 
    with.
  - Made minor updates and fixes to the documentation.
  - Fixed path to data license and original metadata for ESRI data 
    files, and
    updated the license.
  - Improved error reporting in Edit mode's Import Data... feature.
  - Modified the GeoTIFF parser so it stands a better chance of dealing 
    with files that mix up their natural origin and false origin 
    parameters.
  - Fixed bug in Layer/Selection Table export that was writing all 
    attributes
    of a layer, instead of only the visible ones.
  - Fixed bugs in the way My World dealt with image files without a 
    world file.
  - Fixed bug in parsing text data files with empty lines.

3.0b13 - 2005-01-18

  - Added Glacier Layer and Mapview to the distribution.
  - Modified the way Layer and Selection tables are built, so the 
    "waiting" cursor at least has a chance of showing up.
  - Modified the Show Selection Table command so it shows a warning for 
    tables with more than 10,000 items (just like the Show Layer Table 
    command).
  - Modified the Unproject Shapefile... command so it shows an error 
    dialog if the user selects a folder with no shapefiles in it.
  - Added more graceful error recovery when saving Layers.
  - Fixed the unproject on import window so that it imports the selected 
    file after unprojecting it.
  - Fixed the Table, Statistics, and Histogram buttons so they are 
    disabled when the selected Layer has no data.
  - Fixed bug that was causing image link windows not to be re-shown 
    after they were closed.
  - Fixed bug that was making it impossible to save a layer as locked.
  - Fixed bug in "Save Layer As..." that was leaving the old layer data 
    files open.
  - Fixed bug introduced in 3.0b12 that made it impossible to delete 
    Selections.
  - Fixed the window that pops up when the Get Information tool is 
    selected so its menu doesn't include layers with no information to 
    get.
  - Fixed several bugs that were causing My World not to test Layer data 
    files to see if they were locked when it determined whether "Save 
    Layer" should be enabled.

3.0b12 - 2005-01-14

  - Built the new installer using the licensed version of 
    InstallAnywhere, enabling My World to register its name and file 
    extensions on Windows.
  - Increased the number of vertices used in making Point layer buffers, 
    so they look more like circles.
  - Modified the Layer list so that duplicate layers are not created by 
    dropping the same data file on the Layer List or Map multiple times.
    Dropping an attribute from a layer already in the map will cause 
    that layer to modify one or more aspects of its appearance to use 
    that attribute.
  - Modified the mouse position display so that invalid or not-a-number 
    locations display as "Out Of Range".
  - Modified the toolbar so that the table, histogram, and statistics 
    buttons are disabled when the selected layer has no data.
  - Updated the documentation with new GEODE project banner, fixed 
    broken link, and added new NSF grant number to title page.
  - Fixed bug in units menus in Analyze mode that would cause units 
    settings to be re-set when the user changed the source or target 
    layer/selection.
  - Fixed bug in Annotation layer input that was failing to read saved 
    Annotations' text alignment setting.

3.0b11 - 2005-01-13

  - Improved the performance of polygon drawing in Edit mode (using 
    similar methods to those used for Visualize mode in the previous 
    version).
  - Added Data Library icons for Thredds links (generic folder and file 
    icons are no longer used).
  - Added the Earth Structures and Photo & Link Example mapviews to the 
    distribution, and removed the trivial example mapview.
  - Added the instructions for downloading and importing images from 
    TerraServer to the documentation.
  - Improved the feedback given while loading layers and mapviews 
    dropped on the Layer List or Map, and while making lasso or marquee 
    selections.
  - (Finally!) fixed intermittent drag-and-drop freezing bug on MacOS X.
  - Fixed bug in deleting the last vertex from a polygon or polyline in 
    Edit mode.
  - Fixed another memory leak related to the "Windows" menu.

3.0b10 - 2005-01-12

  - Vastly improved the speed of drawing polygon layers with many 
    individual rings associated with each record (e.g., Continents, Land 
    Use).
  - Slightly increased the granularity of polygons after automatic 
    detail reduction. The change should not be noticeable, and makes 
    drawing polygons at large scales 25% faster on average.
  - Made tremendous improvements in the memory efficiency of loading SHP 
    files, making some files load as much as 200 times faster.
  - Reduced the amount of memory required to load DBF files.
  - Made huge improvements in the speed and efficiency of loading csv 
    and tsv files.
  - Made many other small changes to improve memory efficiency - leading 
    to better responsiveness.
  - Made major improvements in the speed of buffering operations (up to 
    2x faster).
  - Modified the Zoom to Selected button so it is disabled when the 
    selected Layer is invisible.
  - Modified Construct mode so that the "waiting..." cursor is used 
    while loading a Mapview opened via drag-and-drop.
  - Modified the Save Mapview As... dialog so that the "include linked 
    files" buttons are automatically checked if the file being saved 
    includes linked files.
  - Added a dialog that asks the user to confirm that data is 
    unprojected when it is imported.
  - Added the Climatic Averages data to the distribution.
  - Updated the documentation from 2.0 to 3.0.
  - Improved the layout of error message dialogs.
  - Improved the error message for failure of dateline-wrapping.
  - Fixed cursor bug on Windows XP by using a custom crosshair cursor.
  - Fixed memory leaks that were causing Layers to stay in memory even 
    after being removed from the Map.
  - Fixed bug in saving folders of Ascii Grid and WorldWatcher files 
    that was causing duplicate grid files to be written.
  - Fixed the display of statistics for Date/Time fields.
  - Fixed bug in file chooser dialogs that would allow the main My World 
    window to obscure the dialog, making it impossible to do anything.
  - Fixed bug that was causing My World to fail to delete temporary 
    folders created by opening mpz and m3vz mapview files.
  - Fixed bug in "Export..." button for Layer Information and Selection 
    Windows that was causing it to always export every record in the 
    Layer, instead of only the ones in the table.
  - Fixed bug in including linked files that was causing tables not to 
    be updated with linked files' new location after a save.
  - Fixed bug in projection menu that would show up when My World had 
    trouble loading its projections from the preferences folder.
  - Fixed infinite-loop bug in computing intersection or subtraction of 
    groups of polygons that overlap.
  - Fixed bug in the default name of polygon intersection and 
    subtraction operation results.
  - Fixed a bunch of typos in the release notes file.

3.0b9 - 2004-12-15

  - Added the ability to print to PNG, EPS, and CGM files, in addition 
    to JPEG and PDF.
  - Modified edit mode so that users can't accidentally edit computed 
    fields (i.e., length, perimeter, area).
  - Modified Visualize mode so that the re-center projection tool is 
    disabled when viewing the map in a layer-matching projection.
  - Modified the Layer List so that selecting a layer causes Selections 
    in the list to become deselected.
  - Improved the memory efficiency of data loaded from CSV and TSV 
    files.
  - Improved the error message for parsing errors in Edit mode.
  - Fixed several bugs in importing (joining) data to an existing layer.
  - Fixed an obscure bug in transforming projected polygons.

3.0b8 - 2004-12-09

  - Added the ability to re-arrange the order of attributes in imported 
    data files when creating a layer.
  - Added the ability to create annotations for a selection within a 
    layer, as well as for layers as a whole.
  - Added a "Close" item to the windows menu for all windows except the 
    main window.
  - Modified the size display aspect so that there are multiple ranges 
    of sizes to choose from (i.e., small, medium, and large).
  - Modified the layer table view and statistics tables so that clicking 
    on a column header selects that column (when column selection is 
    enabled).
  - Changed "Save" to "Save Maview" and "Select All" to "Show All".
  - Fixed bug in setting initial window sizes that was cutting of the 
    buttons at the bottom of some windows.
  - Fixed several bugs in deleting attributes from a table whose columns 
    have been re-ordered by the user.
  - Fixed a bug introduced in b7 that caused most text fields in csv and 
    tsv files to be parsed as link fields.
  - Fixed several bugs in saving linked files into mapviews.
  - Fixed bug in Edit mode that was not marking layers as modified when 
    an attribute was deleted.

3.0b7 - 2004-11-30

  - Redesigned the Contour Lines analysis method screen.
  - Simplified the link interface so that we only have one type of link, 
    and My World automatically opens images internally and other files 
    with a browser.
  - Simplified the URL entry widget so that the bookmarks menu is less 
    obtrusive.
  - Improved the reporting of errors when parsing table values in Edit 
    mode.
  - Fixed "zoom to selected" button in Edit mode (we lost its  
    functionality in version 3.0b5).
  - Fixed bug in Data Library attribute display (was showing the layer 
    name instead of attribute names).
  - Fixed bug in attempting to view metadata for mapviews.
  - Fixed bug that would sometimes cause My World to appear to freeze 
    when using an ellipsoidal transverse mercator projection.
  - Fixed bug in Edit mode that would cause it to refuse to edit empty 
    layers in non-cylindrical projections.
  - Fixed bug that was causing My World not to quit when its main window 
    was closed.
  - Added items for State Plane and UTM projections to the Projection 
    menu.
  - Added version information to the error log.

3.0b6 - 2004-11-23

  - Improved the way mapview files are saved, introducing new mapview 
    file formats (old file formats are still supported, but are 
    read-only).
  - Modified the way file links are stored: file links are now always 
    relative to the location of the mapview file if they're in a mapview 
    file, and relative to the My World application if they're in a layer 
    outside a mapview file. Conversion between the two is automatic and 
    transparent.
  - Added a new graphical editor for link attributes.
  - Modified Edit mode so that new points are selected for editing in 
    the vertex editor (the lat/lon text boxes) when they are created.
  - Added meters and feet as options to the measurement units menu in 
    the preferences dialog.
  - Improved the error handling in THREDDS layer loading.
  - Added a work-around for bugs in Java's handling of "file:" URL's, 
    thanks to Apache's Geronimo project. This fixes problems with My 
    World's handling of image links.
  - Fixed bugs with dropping remote layer files onto the map.
  - Changed the error reporting for minor exceptions, such as errors 
    while reading preferences files, to be less alarming.
  - Fixed bug in using the Add Vertex tool on polylines (it was 
    impossible to  add a point to the end of a line in some situations).
  - Improved the way My World works around problems with quit events on 
    Mac OS X.
  - Fixed bug in computing maximum menu height.
  - Fixed a bug the way folders of WorldWatcher and Ascii grid files are 
    saved that would sometimes cause the order of attributes in the 
    layer to change unexpectedly.
  - Fixed a bug in computing statistics for layer attributes that 
    contain only missing values.
  - Fixed bugs in wrapping contour lines around the dateline.
  - Fixed bug in clicking on a grid layer that wraps around the dateline 
    with the Arrow or Get Information tool.
  - Fixed multiple bugs in the way projections handle false easting and 
    northing (thanks to Dave Smith for finding this one).
  - Refactored all of the window management code for better 
    encapsulation.

3.0b5 - 2004-11-09

  - Added zoom to next and zoom to previous (back) buttons. 
  - Added the ability to un-project an entire folder of shapefiles at 
    once.
  - Added a checkbox to the Layer Information window to keep records in 
    the table as new ones are added.
  - Added a checkbox to the dialog that pops up when you select the Get 
    Layer Information tool allowing you to disable the dialog for the 
    duration of the current session.
  - Added the ability to edit the sizes of individual classes to the 
    size appearance aspect.
  - Modified the Layer Statistics & Selection Statistics windows so that 
    they show a summary table by default, with the option of seeing 
    details for a particular attribute.
  - Modified the Edit Layer Appearance window and numeric legends so 
    that numeric values display with the selected attribute's number 
    format.
  - Greatly improved the speed of computing natural breaks for large 
    (>10,000 records) data sets.
  - Improved the memory efficiency of selections by not copying the 
    array of record indices every time it needs to be shared.
  - Improved both the memory efficiency of computing statistics by not 
    keeping a separate copy of each field's data in the statistics 
    object.
  - Replaced the Evanston & NU Campus aerial photos with more detailed 
    color aerial photos.
  - Removed fields for entering a missing-value number - just use the 
    value set in Edit Layer Information.
  - Turned off the ability to write to remote URL-based files; it 
    doesn't seem to work.
  - Reduced the maximum height of menus from 768 pixels to 752 pixels so 
    the top of the menu doesn't end up behind the menu bar on MacOS X 
    machines with small screens.
  - Fixed bugs in Edit mode that were causing shapes that had not been 
    modified to be treated as though they were.
  - Fixed a bug in new attribute by math operation analysis method.
  - Fixed a typo in the word "excluding".
  - Changed the name of the "None" selection to "All (highlighting 
    off)".
  - Changed the "Export" menu items to say "Print" instead.
  - Changed the tooltip for "Delete Layer" to say "Remove Layer from 
    Map" instead.

3.0b4 - 2004-10-26

  - Fixed contour line generation to use a new, faster, better algorithm 
    for generating contours.
  - Added support for generating contours for projected grids (currently 
    only available via THREDDS).

3.0b3 - 2004-10-21

  - Modified the way My World reads ASCII grid files, so that we read 
    them the way ArcGIS writes them (which is not the way the spec says 
    they're supposed to be written).
  - Limited the maximum height of pop-up menus to 768 pixels, for those 
    on small screens.
  - Fixed bug in counting intersections that was ignoring lines with 
    only one segment.
  - Fixed bug in changing the name of an Image layer while viewing the 
    map in its "Match [layer name]" projection.
  - Fixed bug that was causing layers not to recompute their computed 
    length and area values when edited once they had been saved.
  - Fixed bugs in computing the bounding rectangle for point layers in 
    density grid and interpolation analysis methods.

3.0b2 - 2004-10-20

  - Added the new attribute by counting intersections analysis method.
  - Fixed bug in list of selected records that rendered Edit mode 
    unusable.

3.0b1 - 2004-09-28

  - Added the ability for Data Libraries to contain MapView files, and 
    to open a mapview file by dragging and dropping it from a Data 
    Library onto the Layer List or Map.
  - Added a new "All Map Views" Data Library that indexes and lists all 
    mapview files in the data folder.
  - Added the ability to delete shape layer items to Edit mode.
  - Added the ability to select and modify the properties of more than 
    one Annotation at a time.
  - Added the ability to set the text style of all Annotations in a 
    layer at once using the "Edit Layer Appearance" dialog.
  - Added spacers to the toolbars so that buttons appear directly over 
    the component they act on (i.e., data library, layer list, or map).
  - Changed the way points are drawn on the map, enabling the use of a 
    special square icon that draws 8-10 times faster than other shapes.
  - Changed the way selections are stored internally, making updating 
    the appearance of a layer 15-16 times faster.
  - Changed the way selections are saved in mapview files, making 
    mapview files with selections in them load much, much faster.
  - Made further improvements to the handling of Date and Time values,
    including the new Year attribute type.
  - Modified all menus in My World so that they show more than 8 items 
    at a time, working around JDK bug 5092549 in the process.
  - Modified the name label in layer control panels so that it crops the 
    layer name when necessary, to make the layer control panel less 
    wide.
  - Modified Edit mode so that users are prevented from editing layers 
    in the current projection if doing so would cause a loss of layer 
    data.
  - Updated the splash screen and added a new expiration dialog so that 
    a testing version expiring looks different from a trial version 
    expiring.
  - Fixed the tooltips for toolbar buttons so they tell you exactly what 
    the button will do in the current situation (i.e., whether they will 
    act on a layer or selection).
  - Disabled GPS mode and Import From THREDDS.
  - Fixed bugs in saving the state of a layer's selections (i.e., shown 
    vs. hidden, highlighted vs. not highlighted).
  - Fixed bugs in selecting by distance from items within the same 
    layer.
  - Fixed bugs in computing the bounding polygon of a Grid selection.
  - Fixed bug in the select by lat/lon analysis method (was using the 
    wrong icon).
  - Fixed background color bug in drawing the radio buttons for 
    highlighting selections.
  - Fixed bug in layer control panel that was causing the layer 
    appearance icon not to be updated.
  - Fixed bug in analysis progress dialog that was causing its title to 
    be copped in an unfortunate place on Mac OS X.
  - Fixed bug in layer control panel that was causing attribute menus to 
    be updated either too many times, or not enough (depending on the 
    situation).
  - Fixed bug in categorical legends that was showing multiple labels 
    with the same value.
  - Fixed bug in writing shapefile index (shx) files: was using radians 
    instead of decimal degrees for the bounding box.
  - Fixed bugs in writing dBase (dbf) files: not specifying the number 
    of decimal places used for numeric fields, writing modification date 
    incorrectly, padding fields with zeros instead of spaces, maximum 
    length of field names too long.
  - Fixed bug in saving the font name of Annotations.
  - Fixed bugs in PDF output, so that image layers are saved.
  - Fixed bug in reading GeoTIFF files with a custom Projected 
    Coordinate System on platforms with case-sensitive filenames.
  - Fixed bug in editing numeric values in Edit mode.

3.0d8 - 2004-08-23

  - Added auto-scrolling to the measurement tool, the new polyline tool, 
    and the new polygon tool.
  - Added the ability to change the color of features being edited to 
    Edit mode.
  - Use a new, consistent interface for all occurrences of Layer tables, 
    including a row header with row numbers.
  - Rotate the default colorscheme so that multiple layers added to the 
    map don't end up looking the same.
  - Modified legends for categorical data so that highlighted items are 
    moved to the top of the list, so they can all be seen at the same 
    time.
  - Added a pop-up menu to the Get Information tool that prompts the 
    user to select a layer if none is selected in the Layer List.
  - Modified the way color choosers are handled so that recently 
    selected colors are saved.
  - Changed the sample display icon for polygon layers from a square to 
    an irregular polygon so it doesn't look like a close box.
  - Fixed mapview files so that the status of the selections disclosure 
    triangle is saved, and the highlight mode is saved even if no 
    selection is highlighted.
  - Modified the Edit Layer Appearance window so that the "More..." tab 
    is not used if one of the minor aspects of display has been 
    modified.
  - Modified Analyze mode to use new, shorter descriptions of analysis 
    results for the default name of Selections and Layers it creates.
  - Modified Analyze mode to set the Layer Information (metadata) of 
    layers it creates to the long description of the analysis results.
  - Improved the speed and sensitivity of point feature hit-testing.
  - Added a dialog to Edit mode that pops up when the user attempts to 
    add a second shape part to the current shape and asks them if they 
    really want to add a second part, or just create a new item.
  - Modified the New Layer dialog to remove the extra step of selecting 
    a shape type after choosing to create a shape layer.
  - Modified Edit mode so that newly-created layers are selected for 
    editing, and have a new item added if they are empty.
  - Increased the size of the shadow in the Day/Night layer to 1 minute 
    short of 90 degrees (was 89.5 degrees).
  - Changed the button text of Colorscheme window from "OK" to "Done".
  - Fixed shape display aspects so that they don't use the blank shape 
    when assigning shapes to categories.
  - Fixed the New Annotation tool so that it won't create an empty 
    annotation if you are labeling a layer and miss clicking on anything 
    in that layer. 
  - Fixed multiple bugs in wrapping circular polygons around the 
    dateline.
  - Fixed bugs in cropping polygons to a hemisphere.
  - Fixed bug in deleting the last vertex of a shape in Edit mode that 
    was making it impossible to delete points with the delete key.
  - Fixed number formatting to ensure that numbers display with at least 
    four fractional digits.
  - Fixed bugs in the display of table headers on MacOS X using the Aqua 
    look and feel.
  - Fixed bug caused by attempting to open a .csv or .tsv file with 
    column names but no rows of data.
  - Fixed bug in zooming where zooming on a single point would have no 
    effect.
  - Fixed bug in editing color display aspects where changing the 
    transparency would cause user-modified colors to revert to default 
    colorscheme colors.

3.0d7 (workshop version) - 2004-07-27

  - Fixed bugs in creating a new mapview that wouldn't always return all 
    settings to their defaults.
  - Fixed bugs in reading and using legend sizes from mapview files.
  - Fixed bug in Layer tables where units wouldn't move with columns  
    that were re-ordered.

3.0d6 - 2004-07-16

  - Added the new Annotation layer type, permitting labeling of map 
    features.
  - Made many improvements to GPS mode; some by Greg, some by Eric.
  - Changed the interface for switching modes from buttons back to tabs.
  - Added support for the ability to open files by double-clicking in 
    the OS (making it actually work is dependent on the installer).
  - Modified Analyze mode so that all operations are always visible - 
    disabled operations are drawn in gray.
  - Improved the speed of exiting Edit mode by only saving changes to 
    those shapes that have been modified.
  - Added the Year and Zip Code number display formats.
  - Added the ability to export a layer's data table to the Layer Table 
    window.
  - Fixed many bugs in the handling of date & time values.
  - Fixed bugs with reading Microsoft Excel-style CSV files (with quotes 
    around values containing commas).
  - Fixed bug in reading layers with the "no shape" shape.
  - Fixed several bugs in the management of menus in Analyze mode.
  - Fixed MacOS X-specific bug that would not allow users to cancel 
    quitting if quit was selected from OS menu bar or using command-Q.
  - Fixed bug in Zoom To All when an empty layer was in the map.
  - Reorganized Edit mode to allow editing of both Shape and Annotation 
    (and, in the future, Grid layers).
  - Fixed several possible memory leaks in handling menus.
  - Fixed the status bar so that the grow box doesn't cover the scale on 
    MacOS X.
  - Fixed division-by-zero bug in calculating the center of some 
    polygons.
  - Improved the trial version of My World's test for expiration so that 
    uninstalling and re-installing won't get you another free 45 days.
  - Modified the "save changes?" warning so that My World won't ask you 
    to save if there is no file open and no layers in the map.
  - Changed error reporting to display the error class name if the error 
    has no message.
  - Improved the quality of JPEG output for "Export Map...".
  - Bullet-proofed the layer-specific projection removal so that they 
    aren't saved across sessions, even if our cleanup method doesn't 
    have time to complete (as sometimes happens on MacOS X).

3.0d5 - 2004-05-18
  
  - Combined Visualize and Highlight modes.
  - Integrated Greg Allen's GPS mode into the main code base.
  - Re-added the map scale display that was accidentally removed at some 
    point.
  - Fixed bug in computing the bounds of point features that caused 
    "zoom to all" and "zoom to selected" to ignore point layers.
  - Fixed bug that was causing layer-specific projections to be saved to 
    the projections folder on MacOS X.
  - Fixed some missing-resource bugs introduced in last version.
  
3.0d4 - 2004-05-14
  
  - Modified the Map so that when a layer with a specific projection is 
    added to the Map, it will automatically switch to that projection.
  - Combined the Set & Spatial versions of Intersect, Union, and 
    Subtract analysis methods.
  - Modified Analyze mode to use an operations result description as the 
    suggested name for the result (instead of "Untitled").
  - Modified the Projection editor so that non-UTM and non-State Plane 
    projections show blank controls in the UTM and State Plane editor 
    panes.
  - Fixed bug that was causing Image layer projections to remain in the 
    projection menu even after the layers had been removed from the map.
  - Refactored the various Layer Control Panel classes to consolidate 
    duplicated code.
  - Added more robust error handling for THREDDS layers.
  
3.0d3r2 - 2004-05-06
  
  - Fixed bug in reading older versions of Layer & Map View files.
  
3.0d3 - 2004-05-05
  
  - Added limited support for reading data from THREDDS online data 
    catalogs.
  - Added support for projected grid layers.
  - Added a new customizable aspect of display for polygons: symbol 
    density.
  - Increased the precision with which My World reads and writes world 
    (.tfw and .jgw) files.
  - Modified the .dbf file parser to be more lenient about how numerical 
    values are formatted.
  - Fixed bug in Edit mode that was converting all polygons to 
    clockwise, even when it shouldn't.
  - Fixed bug in java version-checking on MacOS X (1.4 wants different 
    system properties than 1.3).
  - Removed some debugging print statements inadvertently left in for 
    3.0d2.
  - Fixed bug in the Longitude column for point data (was displaying 
    latitude).
  - Fixed bug in layer tables that was causing them not to be updated 
    when the layer's data changed.
  - Fixed several bugs and inefficiencies related to polygon rendering 
    on both Windows and MacOS X.
  - Fixed bug that would allow a polygon's symbol to be drawn when it 
    was supposed to be hidden by the highlight mode.
  - Fixed bug (that was actually supposed to be a feature) in Geographic 
    projection that would cause it not to line its edges up with images.
  - Fixed bug in computing the center of polygons (for placement of 
    symbols).
  - Improved the speed of point-in-polygon testing by a factor of one 
    hundred.
  - Fixed a bug in the Azimuthal Equidistant projection's 
    inverse-projection of longitude
  
3.0d2 - 2004-04-16
  
  (limited release, notes included with those for 3.0d3 above)
  
3.0d1 - 2004-03-19
  
  - Added support for image files: TIFF and JPEG (with a world file), 
    plus GeoTIFF (minus a few obscure projections).
  - Added new projections: Albers Equal-Area Conic, Azimuthal 
    Equal-Area, Azimuthal Equidistant, Equidistant Conic, Oblique 
    Mercator (still somewhat buggy), Polyconic, Robinson, and Transverse 
    Mercator.
  - Added support for lots of new ellipsoids and units (necessary for 
    GeoTIFF support)
  - Added a dialog allowing user to directly edit projection parameters, 
    creating new projections in the process.
  - Added map scale display (screen meters : world meters) to the status 
    bar.
  - Increased the maximum memory heap size to 512MB (necessary for some 
    larger images).
  - Improved the computation and display of rhumb lines on the map.
  - Fixed bug in automatic resizing of JDialog windows.
  - Fixed bugs in layer table models to allow simultaneous display of 
    checkbox column AND location.
  - Modified layer table class to make code more readable.
  - Moved a number of strings embedded in the code to the strings file 
    for easier internationalization.
  - Added support for displaying State Plane and UTM projections live on 
    the map.
  - Fixed bug in displaying conic projections centered close to a pole 
    or the equator.
  - Fixed bugs in computing the bounds of polyline map features.
  - Fixed bugs in wrapping polygons and polylines around the dateline 
    when they have a vertex that lies exactly on the dateline.
  - Fixed bug in the Geographic projection that was giving incorrect 
    results when the center latitude was non-zero.
  - Fixed a similar bug in Mercator projection (incorrectly projecting y 
    values when center latitude was non-zero).
  - Fixed a number of typo-related bugs in the Vertical Perspective 
    projection.
  - Fixed a long-standing bug in editing polygons that would convert all 
    polygon rings to clockwise (positive).

2.0 final - 2004-01-15
  
  - Added a "Help..." item to the Windows menu that opens the html 
    documentation using BrowserLauncher.
  - Modified the field menus in the Layer Control Panel so that they 
    don't become invisible if you select "uniform" from one.
  - Modified the Edit Appearance window so that extra aspect tabs aren't 
    hidden if those aspects have been customized.  
  - Modified the Edit Appearance window for numerical fields so that the 
    "Classify By" menu is at the bottom.
  - Fixed a bug in categorical data maps that would not recognize new 
    values created after categories were created.
  - Fixed a typo in the tool tip for the Zoom To Selected button (thanks 
    to Maya Wallace for spotting it).
  - Updated the documentation with PASCO contact and licensing 
    information.

2.0b5 - 2003-12-18

  - Modified the Edit Layer Appearance window to hide all but the most-
    frequently-used aspect tabs behind a tab that says "More...".
  - Modified Edit mode to automatically switch to a Cylindrical 
    projection when entered, to prevent the automatic clipping done by 
    Conic and Azimuthal projections from removing data.
  - Modified legends for point size to use their layer's shape type 
    (e.g., Map Symbol, Pie Chart, or Arrow) to display size.  
  - Fixed a bug caused by dragging an unsaved, computed layer and 
    dropping it on the map.
  - Fixed a bug in computing polygon union that could lead to duplicate 
    output polygons.
  - Fixed a bug in computing the union of polygons that don't intersect, 
    but share a common edge or edges.
  - Fixed a bug in buffering that was sometimes excluding legitimate 
    "hole" polygons from the output.

2.0b4 - 2003-12-08

  - Updated and beautified the splash screen/about box.
  - Fixed potentially serious bugs associated with the interaction of 
    automatically-computed fields and user-computed fields, especially 
    in Map View files without data.
  - Fixed bug in the "Make Layer" button in Edit Selection Windows -- it 
    didn't automatically select the chosen selection after switching to
    Analyze mode.
  - Added a workaround for a bizarre "ArrayIndexOutOfBounds" error that
    would sometimes occur after selecting "New Map View" (apparently a 
    JDK bug).
  - Fixed a bug in buffering that would occur when two or more leftmost 
    points in a Polyline or group of Polylines lay on top of one 
    another.
  - Fixed a bug in polygon intersection and subtraction that would 
    sometimes occur when two polygons' edges intersected, but the result 
    of the operation was empty.
  - Fixed bug with opening URL's on MacOS X 1.3 (Panther) (may exist in 
    earlier versions of MacOS X as well).

2.0b3 - 2003-11-25

  - Added an "About My World..." item to the Windows menu
  - Added the ability to expire a fixed number of days after 
    installation, in
    addition to the ability to expire on a given date.
  - Added a more detailed World Countries layer to the distribution.
  - Added a Frequently Asked Questions (FAQ) section to the 
    documentation.
  - Improved the expiration warning dialogs.
  - Fixed disappearing-cursor bug in MacOS X 10.3 "Panther"
  - Fixed a bug in dealing with improperly-formatted data files in Data 
    Libraries
  - Fixed bug in the "Custom" numeric classification method that would 
    prevent the user from changing the number of classes.
  - Fixed bug in numeric appearance aspects where minimum, maximum, and 
    missing-value results were not being saved (thanks to Colleen Riley 
    for discovering this and the previous bug).
  - Fixed bug caused by trying to save the size of legends that didn't 
    exist.
  - Fixed bug when opening a map view before switching to visualize or 
    highlight mode.
  - Fixed problem with the polygon for Lesthoto in the Countries layer.

2.0b2 - 2003-11-14

  - Improved name-conflict resolution for file indexes, allowing the 
    user to rename one of the offending files without leaving My World.
  - Added the Edit Data Libraries window; disabled editing of Data 
    Libraries in Construct mode.
  - Changed the file format for Map Views with data from XML-based to 
    ZIP-based to speed up reading and saving those files. The old format 
    is still supported, but new Map Views will be saved in the new 
    format.
  - Added checks to ensure that changes to Data Libraries aren't thrown 
    out on exit without asking the user first.
  - Fixed directory management to save preferences and create a second 
    data directory in the user's home directory if the user doesn't have 
    write access to the My World folder.
  - Separated the Colorscheme editor from the Preferences dialog.
  - Changed properties so that we can have platform-specific keystrokes 
    in the menu bar (Control-key on Windows, Command-key on Mac).
  - Changed the copyright notice window to a splash screen that 
    automatically gets sent to the back when My World is finished 
    starting up.
  - Added a "Windows" menu to every non-modal window created by My World 
    to ease window management.
  - Added a "format" setting for attributes, currently only used for 
    numerical attributes, to select the display format (e.g., 
    fixed-point, scientific, etc...).
  - Got rid of the Logarithmic classification method and added Natural 
    Breaks, Quantiles, and Custom (user-entered) methods for 
    classification of numerical attributes.
  - Added Arrows as a choice for symbol type, where the direction of the 
    arrow is the variable.
  - Added a Label appearance aspect so users can display a legend (of 
    country names, for example) that's not associated with an actual 
    aspect of the layer's appearance.
  - Vastly improved error handling and reporting, especially for errors 
    associated with reading and writing files.
  - Improved the handling of Categorical attributes to allow more than 
    one value in each category, and adding an editable name for each 
    category independent of its contents.
  - Added a slider for changing color transparency to all color editing 
    panels.
  - Modified the Map View file to save legend sizes for Visualize and 
    Highlight modes.
  - Modified the way tools are handled to keep the same tool selected 
    when the user switches modes whenever possible.
  - Improved the automatic sizing algorithms for legends.
  - Improved Data Documentation Window handling to reduce duplication.
  - Double-clicking on a Colorscheme will now open the Edit Colorscheme 
    Window.
  - Added tooltips for the "Show Data Documentation" buttons.
  - Modified the startup process to load Analysis Method classes as well 
    as Layer classes.
  - Modified the Export Map dialog so that JPEG is the default format.
  - Removed support for SVG export to simplify licensing issues.
  - Changed the behavior of Analyze mode to switch to Highlight instead 
    of Visualize mode when a Layer without a data table (e.g., a Buffer) 
    is created.
  - Re-ordered the items in the Layer menu to match order of buttons in 
    the Toolbar.
  - Added support for the MacOS X "About My World" menu item.
  - Made the Data Library displayed at startup a specific setting, 
    rather than simply displaying the last (alphabetically) in the list 
    at startup.
  - Added support for expiration (at a specific date -- expiration an a 
    fixed time after installation is not yet implemented).
  - Improved the consistency of use of Missing-Value number settings.
  - Put computed area, perimeter, and length attributes in the "Physical 
    Geography" category instead of the "Other" category.
  - Modified the Edit Layer Appearance window so that "Copy From..." and 
    "Show Histogram" buttons are hidden when they're not applicable.
  - Changed the storage of symbol sizes from pixels to inches, so that 
    maps look the same on Windows (96dpi) and Mac (72dpi) displays.
  - Adjusted the layout of Legend panels for better appearance.
  - Consolidated separate epsilon values (the value for "close enough" 
    for My World to consider two points to be equal).
  - Changed the controls for choosing a Selection to highlight from 
    check boxes to radio buttons (since they behave like radio buttons).
  - Changed the icon for Layer Statistics from sigma to x-bar.
  - Modified the Get Information tool so it doesn't show items that are 
    hidden by the current highlight mode.
  - Put the number of vertices in the polygons being buffered in the 
    progress dialog for the Make Buffer analysis method.
  - Fixed file handling to disallow "Save" for temp files ("Save As..." 
    required).
  - Added a button for importing data files to the toolbar in Construct 
    mode.
  - Improved the error reporting for Kriging interpolation if My World 
    is unable to fit the selected model function to the variogram.
  - Modified Data Libraries so they don't keep data files open (was 
    running into the maximum open files limit on MacOS X).
  - Fixed several problems with column indexes in tables caused by 
    computed attributes (i.e., perimeter area, and, length).
  - Fixed bugs associated with Data Category menus, especially with the 
    "New..." item.
  - Fixed problems with the background color of Layer Control Panels 
    when the user changes the Look and Feel.
  - Fixed a number of problems with drag-and-drop on MacOS X.
  - Fixed problems with preferences not being saved on exit in MacOS X.
  - Fixed bugs caused by closing the splash screen before it's moved to 
    the back.
  - Fixed MacOS X bug caused by the splash screen not closing 
    automatically on exit.
  - Fixed bugs where Analysis Methods would not be hidden even if they 
    were disabled, or would disappear completely.
  - Fixed bugs caused by adding attributes to a layer and not saving 
    them.
  - Fixed bug in color choosers where the color dialogs were showing 
    with the wrong initial value.
  - Fixed bug in editing polyline layers where a closed curves were 
    opened when the user started to edit them.
  - Finally corrected the behavior of "contains" and "intersects" 
    analysis methods, including differentiating between partial and 
    complete containment.
  - Fixed bug in computing the minimum distance between two sets of 
    points.
  - Fixed bug in Grid layers when the projection center wasn't (0, 0).
  - Added a 1-meter gap along the dateline in Grid layers to fix a 
    wrapping problem.
  - Fixed Buffering panel to disallow the creation of buffers with 
    invalid radii.
  - Disallow spatial union/intersection/subtraction within a single 
    layer (bad things can happen).
  - Fixed lower-left-vs-upper-left corner bug in Ascii Grid File 
    support.
  - Fixed bugs with using the Get Information tool close to the 
    dateline.
  - Fixed bug in projected polygons that would cause them to be hidden 
    when they entirely contained the viewing rectangle.
  - Fixed the highlight mode menu to hide the "Transparent Unselected" 
    mode for non-polygon layers (for which it is indistinguishable from 
    the "Hide Unselected" mode).
  - Fixed bug in the handling of backslash-escaped separator characters 
    in CSV and TSV data files.
  - Fixed bug in PDF encoding for partially transparent images.
  - Fixed numerous bugs in computing the intersection of polygon edges 
    with coincident vertices.
  - Fixed bug in computing the union of buffer polygons that would 
    exclude valid "hole" rings from the output.
  - Fixed bug in polygon intersection/union/subtraction caused by 
    coincident vertices.
  - Fixed infinite loop bugs in polygon union/intersection/subtraction.
  - Fixed bug in polygon union caused by non-intersecting rings 
    contained by a result ring.
  - Fixed bug with duplicate vertices in polygon 
    intersection/union/subtraction.
  - Fixed bug in computing the signed area of a ring by using adaptive 
    scaling, avoiding floating-point underflow.
  - Fixed progress dialog so the "Cancel" button isn't displayed for 
    operations that can't be canceled.

1.7b1 etc..

  (several internal-only releases were made between 1.6b3 and 2.0b2. 
   Release notes for all of these versions are included in the notes 
   for 2.0b2.)

1.6b3 - 2003-07-24

  - Vastly improved the speed of drawing complex layers at low 
    magnification.
  - Added support for exporting maps in SVG (Scalable Vector Graphics) 
    format.
  - Put the title of the current mapview file in the main window's title 
    bar.
  - Fixed numerous memory leaks of layer data (memory allocated for 
    layers was not de-allocated when layers were deleted).
  - Fixed bug in effective type for layer attributes (effective type 
    information was not being saved).
  - Fixed bug in editing link values in Edit mode.
  - Fixed minor bug in display of Layer Control Panels.
  - Fixed memory-wasting code in offscreen buffering of Map.
  - Fixed bug in buffering polyline layers.
  - Fixed bug in initial transparency values (was 12% instead of 0%).
  - Fixed bug that was causing shapes not to be drawn at high 
    magnifications.
  - Fixed bug in saving Link values to shapefiles.
  - Fixed bug in re-ordering items in the Layer Information window.

1.6b2 - 2003-07-01

  (internal release only, notes appear above for version 1.6b3)

1.6b1 - 2003-06-24

  - Added support for metadata files to go along with data files and an 
    interface for displaying them.
  - Added support for ESRI's Ascii Grid File format (".asc").
  - Added a locking option to lock data files independently of their 
    locked/unlocked state in the file system.
  - Added pie charts as alternative to map symbols for displaying 
    points.
  - Added symbol shape, size, and color as display attributes for 
    polygon layers.
    Symbols are drawn at the centroid of each polygon.
  - Added the ability to delete table columns to Edit mode.
  - Added the ability to change the effective data type of columns in a 
    layer's data table.
  - Added support for anchor tags and image tags as well as raw URL's 
    for link fields.
  - Added "Save Data Library" item to the "File" menu to save changes to 
    the current Data Library.
  - Added the "Add Vertex to Polygon" tool to Edit mode.
  - Added the Link tool to Visualize and Highlight modes.
  - Added the ability to edit and delete existing Colorschemes to the 
    Preferences dialog.
  - Made transparency an attribute of layers as a whole, rather than 
    individual colors.
  - Modified the Preferences dialog to allow the user to set a default 
    Colorscheme that will be initially selected in all "Edit Layer 
    Appearance" windows.
  - Added "Show Layer Data", "Show Statistics" and "Show Histogram" 
    items to the Layer menu to keep it in sync with the toolbar.
  - Added a "Copy Appearance From..." button to the "Edit Layer 
    Appearance" window, allowing the user to copy display settings form 
    one attribute to another.
  - Added support for importing dBase files as well as CSV and TSV 
    files.
  - Added a checkbox to all Selection analysis operations to allow them 
    to directly create layers instead of Selections.
  - Completely rewrote the package for doing math on table columns, 
    making it easier to use elsewhere in the application, easier to 
    adapt to different interfaces, and adding the ability to do math on 
    constant values as well as layer attribute values.
  - Changed the layer file extension from "lyr" (which it seems is used 
    by some ESRI applications) to "myl".
  - Changed number entry text boxes so that the user is not asked to 
    explicitly enter a missing-value number. The number set in the "Edit 
    Layer Information" window is used automatically.
  - Changed marquee and lasso selection tools to show a dialog telling 
    the user to select a layer if no layer is selected.
  - Changed Analyze mode operation selection to be a twist-down tree, 
    reorganized the modes and added a little icon for each one.
  - Changed the projection code so that projections automatically 
    re-center on 0 longitude, 0 latitude when the user changes 
    projection type.
  - Changed startup procedure to search the data folder, as well as the 
    preferences folder, for Data Library files, to sort them 
    alphabetically before opening them, and to open them from the Event 
    Dispatch thread, rather than the startup thread.
  - Changed the way Map Views are saved so that Layers are no longer 
    required to be saved to their own data files before they can be 
    saved in a Map View, as long as the Map View is being saved with 
    data.
  - Changed map zooming to add a 4-pixel border around the requested 
    bounds. 
    This is especially important for point feature layers, since points 
    right on the edge of the map would often be invisible.
  - Split the "Select by Attribute" into two separate analysis methods, 
    one with the same name for searching for constant values only, and a 
    second, called "Select by Comparing Attributes" for searching by 
    comparing two attributes.
  - Stopped automatically zooming to the extents of a newly-created 
    Selection or Layer.
  - Changed the "Make Layer" button in pop-up layer information windows 
    to take the user to "Convert Selection To Layer" in Analyze mode 
    instead of immediately making the conversion.
  - Changed the name of the "startup" directory to "preferences", since 
    Windows 2000 seems to reserve the name "startup" for its own 
    purposes.
  - The LLXY projection has been renamed Equirectangular, its proper, 
    technical name.
  - Removed the show/hide legend buttons from Layer Control Panels in 
    Construct mode, since legends are never displayed in Construct mode.
  - Changed the name of Customize mode to Visualize
  - Added the sum to display variables for numeric statistics, and 
    improved the efficiency of statistic calculation.
  - Changed the minimum size of all point feature icons to 1 pixel.
  - Removed the "Connections" menu item from the "File" menu, and 
    changed the My World Symphony Service so that it automatically 
    connects to the Connection Manager at startup, and the stand-alone 
    My World so that it doesn't connect to the Symphony Connection 
    Manager at all.
  - Added an interface to the Connection Manager's email file capability 
    to the My World Symphony Service.
  - Changed the error log manager to create the log only when an error 
    occurs, and to append to the log file rather than overwriting it 
    each time.
  - Changed Edit mode to remove the table while doing a join (import) 
    operation. This speeds up the join by about 100-fold by eliminating 
    the need to update the whole table every time we change a cell.
  - Show a confirm dialog before opening an especially large table.
  - Added a separate error message for when a data file is in the 
    current index but not on the disk versus when a data file is not in 
    the index.
  - Added checking to automatically deselect a mouse mode if it becomes 
    disabled.
  - Changed the projection library to produce My-World-Specific shape 
    classes for drawing. By writing the Shape classes ourself, we can 
    improve on the efficiency of both memory and speed.
  - Changed the default preferences so My World always starts up for the 
    first time with the Metal look and feel.
  - Use premultiplied alpha channel for buffer images for better 
    performance on MacOS X.
  - Added support for the MacOS X application menu.
  - Use different modifier key for menu shortcuts on MacOS X and 
    Windows, i.e., Command on Mac and Control on windows.
  - Improved progress bar behavior in general and for polygon buffering 
    specifically.
  - Made map painting smarter so it doesn't have to repaint all of the 
    layers when its border changes.
  - Remove duplicate points from user-drawn polygons, to prevent our 
    polygon intersection and buffering code from getting confused.
  - Added the "Inverse Logarithmic" scaling type for data that's bunched 
    at the top of the scale instead of the bottom.
  - Completely refactored the polygon intersection/union/subtraction and 
    buffering libraries.
  - Reorganized and improved the library code for reading and writing 
    XML data files.
  - Rewrote text data file parsing to tremendously improve speed.
  - Changed how My World manages its list of Selections.
  - Reorganized and simplified the feature geometry package.
  - Use "bridge" interfaces for all our Layer classes, separating the 
    interface from the implementation.
  - Fixed bugs in buffering line layers.
  - Fixed bugs in computing projected bounds of layers.
  - Fixed bug in selecting by distance and dramatically improved the 
    speed of that operation.
  - Fixed bug in building Data Library trees.
  - Fixed the "Cancel" button in "file not found" dialogs so that it 
    actually cancels the find operation.
  - Fixed minor bug in dropping files on the Data Library and the Layer 
    List.
  - Fixed bug in saving and reading missing-value numbers.
  - Fixed bug in computing minimum and maximum values for attributes in 
    layers that have saved appearance information for that attribute.
  - Fixed bug in computing divisions for numeric attribute appearance 
    (off by one).
  - Fixed bug in importing that would enter an infinite loop if you 
    tried to import an empty file.
  - Fixed bug in saving that was putting two copies of the same data in 
    layer and map view files.
  - Fixed bugs associated with deleting an attribute.
  - Fixed bug in routine ensuring that the points in user-drawn polygons 
    appear in clockwise order.
  - Fixed bug in remote files that wouldn't allow them to be 
    dragged-and-dropped.
  - Fixed dBase file input to properly deal with floating-point fields, 
    and to handle files with records longer than 128 bytes. 
  - Fixed dBase file output to create fields with valid lengths, and to 
    format numbers correctly.
  - Fixed bug in shapefile input that could cause My World to try and 
    write to read-only files.
  - Fixed bug in importing very short text (CSV or TSV) data files.
  - Fixed bug in writing numbers to CSV files (don't put commas inside a 
    number).
  - Fixed WorldWatcher layer input so we don't keep multiple copies of 
    the same data.
  - Fixed bug in simultaneously displaying categorical and numeric 
    legends.
  - Fixed bug in hit-testing empty polylines.
  - Fixed undo bug with selections that have been deleted.
  - Added a workaround for drawing bugs in MacOS X Java 1.3.1.
  - Fixed "Save Layer" so that, when selected from Edit mode, it 
    actually saves the current state of the layer in Edit mode, rather 
    that the state when you last switched into Edit mode.
  - Fixed preference file reading to properly catch and handle 
    exceptions.
  - Fixed data importing to ensure that the attribute we're joining on 
    has the same data type in both the source and target data files.
  - Rebuilt the sample data libraries with data files we can 
    redistribute, and added metadata information for all included data 
    files.
  - Updated the documentation.

1.5b3 - 2002-12-14

  - Created new filetype-specific icons for Data Library twist-down view
  - Completely revamped mouse modes & mouse click handling.
  - Feature appearances are now updated synchronously - we were spending 
    more time and  effort on thread management than threading was buying 
    us in this case, and it often caused a deadlock the first time you 
    added a layer.
  - Designed and implemented a new projection library, more precise and 
    efficient (for our purposes) than the OpenMap projection library.
  - Re-implemented handling of Lat/Lon rectangles for greater efficiency 
    and correctness.
  - Changed selected layer border color from look-and-feel specific to 
    orange for greater visibility.
  - Reorganized interface strings file to make reading & editing it 
    easier.
  - Changed image buffering from per-layer to entire map.
  - Map now listens for key events (currently only in Edit mode)
  - Modified map view file type to accommodate recent changes as well as 
    planned extensions.
  - We now store a list of projections in startup folder like we do with 
    colorschemes.
  - Refactored much of the code after reading Martin Fowler's 
    refactoring book.
  - Changed interface of Analysis mode to look more standard, less 
    unusual.
  - Map cropping is now done to projected feature boundaries, rather 
    than lat/lon boundaries, resulting in 100% accurate zooming.
  - Added new Edit mode, including:
    - ability to create new, empty shape layers, optionally importing 
      data from a comma- or tab-separated values file
    - ability to edit existing shapes or draw new shapes
    - ability to join records in a comma- or tab- separated values file 
      to records in an existing layer's table
    - ability to add new rows or columns to a new or an existing layer.
  - Edit menu is now implemented, allowing undo/redo for selected 
    operations and copy/cut/paste for selected text fields and shapes 
    (in edit mode). 
  - Fixed bug triggered by selecting "New Map View".
  - Stopped zooming in on a selection when it's first created
  - Fixed bug in command registration when running in Symphony 
  - Modified MyWorldService to support new multiple-icon ArtifactManager 
    in Symphony, and to send ArtifactSavedEvent's to the reflection 
    tool.
  - Fixed several bugs in window handling when running in Symphony.
  - Layer menu reorganized to more closely match the toolbar
  - Added editable line width and dash pattern properties to Line and 
    Polygon layers
  - Modified socket handling for point input to play nice when its 
    default port is already in use
  - Changed the default projection from Mercator to Miller due to 
    extreme polar distortion in the former when using the new projection 
    library.
  - Relative URL's are now parsed in relation to the My World directory.
  - Fixed several bugs in computing layer table column widths.
  - Transposed rows and columns in Edit Information Display window, so 
    each column in layer table is represented by a column in this table 
    (instead of a row).
  - Consolidated code for editing integer and floating-point values into 
    interface utility classes.
  - Added the ability to export data from selections or Get Info 
    collections as SymphonyTable data exchange format.
  - Fixed problems with several default Colorschemes caused by putting 
    colors too close together.
  - Made Circle feature class a subclass of the Polygon feature class 
    (its currently only used by the Day/Night layer), simplifying all of 
    our feature-to-feature distance and containment calculations.
  - Fixed several bugs in the Date editor control (also used only by the 
    Day/Night layer).
  - Fixed (I think) layer class loading issues in JDK 1.4.
  - Re-implemented the Graticule layer to work with the new Projection 
    library.
  - Fixed several problems in communication with the Symphony Connection 
    Manager.
  - My World now relies on the Shape Index (.shx) file to read 
    shapefiles.
  - Fixed bugs in computing the distance between two great circles.
  - Fixed several bugs and deficiencies in PDF output.
  - Added the ability to convert a grid selection to a grid layer.
  - Fixed a bug in setting the missing-value file color for a layer.
  - Added support for "Float" fields in dBase files (included in some 
    2000 census shape files).
  - Updated the documentation.
  - Fixed bug with infinite values in computing statistics.
  - Increased maximum JVM memory size.

1.5b2 - 2002-12-04

 - Added new Highlight mode, replacing separate "Layer" and "Selections" 
   tabs in Map mode.
 - Move "Edit Layer Appearance" and "Delete" buttons to toolbar, along 
   with new "Show Table" button.
 - Added icon representing constant aspects of a layer display to the 
   layer selections panel.
 - Change selected layer border from look-and-feel-based color (which 
   sometimes was very hard to see) to orange.
 - Make Math Operation dialog an analysis panel in the new "Add Column 
   to Table" analysis method category.
 - Added support for URL links in layer tables, using Eric Albert's 
   BrowserLauncher.
 - Draw non-active analysis method buttons differently than active ones.
 - Change name of "Map" mode to "Customize".
 - Replace open-source ptolemy histogram code with new code inspired by 
   Climographer.
 - Allow weighing of histogram values by feature area for polygon 
   feature layers.
 - Display whether a column in a layer table is sorted ascending or 
   descending in its header.
 - Enable editing of values in layer tables.
 - Added new Map Symbols font symbols for drawing point feature layers, 
   and remove black outlines from all symbols.
 - Display values next to arrows in numeric legend panels.
 - Added support for new Symphony Connection Manager
 - Hide Windows menu when My World is running as a Symphony Service
 - Change handling of map background color
 - Restructure threading library to allow asynchronous tasks to run in 
   event processing thread or separate thread transparently.
 - Use doubles instead of floats for calculating distances.
 - Re-write preferences editor for more sane behavior.
 - Replace modal frames in window manager with JOptionPane-style ones.
 - Move some number formatting that was missed in the last release to 
   the Internationalization class.
 - Improve layout behavior of Layer List & Selection List
 - Use less arbitrary value (20km) to decide whether to measure straight 
   or great circle distance.
 - Work around bug in JDK 1.3 to ensure that a default item is always 
   selected in pop up menus.
 - Added support for date and URL fields in text data files.
 - Remove some debugging code in Kriging interpolation that was trying 
   to write to a non-existent file.
 - Fixed bugs that would sometimes cause watch icon to never disappear 
   from layer control panel.
 - Fixed efficiency bug that made calculating a new column an n^2 
   operation.
 - Fixed bugs in formatting and parsing of dates.
 - Fixed bug in measuring current time of day.
 - Fixed bug in dealing with empty shape layers.
 - Added HTML documentation to distribution

1.5b1 - 2002-07-08

  - Completely redesigned the user interface, keeping the ability to run 
    using the old interface if desired.
  - Switch all internal lists from synchronized Vectors to 
    un-synchronized Lists, improving the speed of many operations 
    including projection.
  - Added copyright notice to most of the source code files.
  - Created new opaque window manager used for all windowing operations, 
    allowing pluggable windowing behavior.
  - Added new error manager object to centralize error reporting policy
  - Implemented the latest version of the Symphony Service interface, 
    using Artifact Manager to save files when running within Symphony.
  - Fixed (I think) bug which causes "layer working" watch icon never to 
    go away.
  - Changed handling of interrupted worker threads.
  - Fixed drag and drop images on MacOS X.
  - Added the ability to zoom to a Selection.
  - Stopped allowing user to change the Selection highlight mode when no 
    Selection is highlighted.
  - Added long, action-oriented descriptions of analysis operations.
  - Improved the handling of complex property strings using 
    MessageFormat.
  - Centralized all number parsing and formatting in the 
    Internationalization class (the proper place for it, I think).
  - Hide the outline color menu for polygon layers unless it's in use.
  - Fixed computed-fields bug when dragging a field name out of a 
    DataLibrary.
  - Fixed Contour Line creation panel so that "Uniform" doesn't appear 
    in variable menu.
  - Improve drawing performance of some JComboBox & JTable cell 
    renderers.
  - Fixed bug in testing database fields for equality.
  - Fixed bug in sorting tables whose columns have been re-arranged by 
    user.
  - Show categorical value lists in alphabetical order
  - Fixed bug in auto-computing minimum, maximum, and missing-value 
    numbers for numeric fields.
  - Allow user to chose categorical values from list in select by value 
    panel when there are less than ten possible values.
  - Fixed typos in the names of old Michigan zones in State Plane 
    unprojection zone menu.
  - Fixed units bug and simplify interface for unprojecting UTM data.
  - Scale the colors or shapes logarithmically instead of the values in 
    numeric legend panels.
  - Fixed "Temperatue" typo in coloscheme name
  - Work around JDK 1.3 JComboBox bug in selecting a default value.
  - Make smallest shape size smaller and largest size larger.
  - Reduce default shape size from 50% to 20%
  - Added support for Cursor families with different sizes for different 
    platforms (cursors now appear to be proper size on Windows).
  - Fixed some synchronization problems in loading layer data.
  - Added grid layer interpolation from point samples.
  - Added tracking layer creation feature (for tracking user position in 
    Virtual  Ambient, only available using old interface).
  - Fixed bug in writing grid files with categorical data.
  - Don't open WorldWatcher files for writing when we only need to read 
    from them.
  - Move projection cropping behavior from separate Crop tool to Zoom In 
    tool.
  - Change Pan tool to work like ArcView's panning tool, by using an 
    image 
    rather than re-projecting on the fly.
  - Make the Layer Selections panel look and behave more like the Layer 
    Control panel.
  - Added button to convert Selection to Layer to Edit Selection window.
  - Fixed synchronization bugs in error reporting broadcast stream.
  - Added JVM version information to Copyright Notice window.
  - Updated the documentation.
  - Fixed persistent misspelling of "Boundary" in interface.

1.0b9 - 2002-03-29

  - Completely re-wrote buffering to eliminate infinite loop problems.
  - Added boolean polygon operations to New Layer dialog.
  - Added "Unproject Shapefile" feature to File menu.
  - Fixed modified/unmodified state checking for Data Libraries.
  - Selected layer is now chosen by default in the Selection Source menu 
    in the New Selection dialog.
  - Map Views now automatically zoom to map extents the first time a 
    layer is added.
  - Added color swatch color picker to Edit Color dialogs.
  - Fixed bug involving layer information windows and multiple Map View 
    windows.
  - Fixed bug when opening a Map View with a projection other than 
    Mercator.
  - Improve progress bar handling for long operations.
  - Fixed bugs in writing shapefiles that caused ArcView to be unable to 
    read shapefiles created by My World.
  - Fixed several bugs in reading and saving comma-separated and 
    tab-separated values files.
  - Added workaround for problem with JComboBox size calculations in JDK 
    1.4
  - Fixed bug in opening Map Views with hidden legends.
  - Moved the modified OpenMap files to a new package and added 
    OPENMAP_NOTE.txt file to distribution to comply with OpenMap license 
    agreement.
  - Added JDOM and Xerces library licenses to distribution to comply 
    with their licensing terms.
  - Reorganized example data, adding LATE activity data.

1.0b8 - 2001-11-16
  
  - Change all file formats from Java properties files to XML files 
    (note that all .lyr, .idx, .csm, .mpv, and .dlb files from previous 
    versions will not work in this version).
  - Improve "Save Changes?" dialogs so that they the window they refer 
    to is not hidden before the dialog is shown.
  - Added a pop-up contextual menu to Data Library windows that allows 
    you to add layers to a Map View without drag & drop (necessary on 
    MacOS X), and to remove layers from the Data Library.
  - Added a library title field to Data Library windows.
  - Made various architectural changes necessary to run as a service 
    within Symphony.
  - Correctly save and restore visibility of layers in a Map View
  - Ask "Save Changes?" before removing a modified layer from a Map View
  - Improved threading performance of layer projection & rendering
  - Added computed area, perimeter, and length fields to appropriate 
    layers
  - Added "Save Changes?" warnings to Edit Layer Appearance and Edit 
    Information Display dialogs (was inadvertently removed in version 
    1.0b7)
  - Added "Layer Statistics..." and "Layer Table..." commands to the 
    Layer menu.
  - Added tool tips to all the buttons in Map View windows.
  - Added icon to Layer Panel to show when the layer is displaying a 
    selection.
  - Allow layers to be dropped on the map, instead of only on the layer 
    control panel.
  - Highlight the selected layer and allow layer selection from the 
    selection control panel.
  - Removed the Map View menu and move all its functions to the toolbar 
    or to buttons at the top of the layer control panel.
  - Added workarounds for bugs in JDK 1.3.1 (DropTarget.addNotify()), 
    JDK 1.4b2 (JRadioButton w/Icon initial size), and MacOS X JDK 1.3.1 
    (clearRect() w/ transparent background color).
  - Fixed Map View windows' modified/not modified state handling.
  - Use shutdown hook to save preferences so they always get saved.
  - Fixed possible deadlock at startup caused by desktop's useWaitCursor 
    methods.
  - Added Measurement Units preference for measure tool and computed 
    area, perimeter, and length fields.
  - Change the behavior of the measure tool from "click-and-drag" to 
    "click to mark point, double-click to stop".
  - Added "show selection statistics" button to selection control panel.
  - Fixed bug where uniform color and shape icons in layer panels 
    weren't updated when the color or shape was changed.
  - Fixed auto resize modes in all tables in My World.
  - Added median and mode to layer/selection statistics
  - Compute sample variance instead of population variance
  - Fixed drag & drop so it works in 1.3.1 AND 1.4 (minor changes were 
    made).
  - Fixed bug that would cause "automatically compute NaN value" to be 
    re-set to true when it shouldn't be.
  - Fixed bug in choosing shapes by numeric values.
  - Tried (with limited success) to eliminate infinite-loop bugs in 
    buffer polygon computation.
  - Correctly handle "cancel" from getURL dialog.
  - Close any internal frames associated with a layer if it's removed.
  - Close any internal frames associated with a selection if it's 
    deleted.
  - Possibly some others that I don't have change logs for.
  - Added release notes file to distribution.
  - Updated the documentation.

1.0b7 - 2001-07-29

  - Redesigned architecture for storing, querying, and rendering map 
    graphics for improved speed and sane "Layer->Save As..." behavior.
  - Added button in Preferences dialog to export My World coloschemes as 
    WorldWatcher colorschemes.
  - Miscellaneous bugs fixed (no specific notes available)

1.0b6 - 2001-05-08

  - Redesigned the Selection List interface and moved it to a tab in 
    the Map View Control Panel.
  - Slight reworking of Selection Creation window.
  - Added buffer polygon and density grid generators to layer creation 
    dialog.
  - Added "Save Layer As..." item to Layer menu. Layer data can 
    currently be saved as Shapefile or CSV points.
  - All save dialogs now add the correct file extension if the user
    fails to do so.
  - Fixed bugs in "Math Operation" dialog.
  - Included "Surface Temperature" and "Elevation and Bathymetry" 
    as example WorldWatcher files, got rid of "Energy Balance".
  - Updated & expanded the documentation!!

1.0b5 - 2001-04-17

  - New unified selection interface, featuring selection by distance.
  - Selections now saved across sessions (in Map View files).
  - New "Create Layer" dialog that allows you to create a new layer
    out of a selection, find the bounding polygon of a grid 
    (WorldWatcher) selection, generate a new layer of contour lines for 
    a WorldWatcher-style grid, or acquire and display data 
    record-by-record from another application using TCP/IP.
  - Redesigned "Math Operation" dialog that handles missing values
    much better.
  - Export maps to PDF or JPEG files (note however that PDF files 
    will not look right unless you use the recently-released Acrobat 
    Reader 5.0, because earlier versions did not support transparency).
  - Added a button to the layer info pop-up window that creates a new
    selection with the records listed in the info window.
  - Many efficiency improvements, in both memory usage and speed.
  - Fixed a number of bugs associated with polygons with holes in them.
  - Dialogs now have default buttons

1.0b4 - 2001-03-09
  
  - Redesigned layer control panel
  - Added preferences dialog to change look & feel, create & save new 
    colorschemes, change background colors, etc...
  - Include lyr files with sample data.
  - Many bugs fixed (no specific notes available)

1.0b3r2 - 2001-01-23

  - Removed debugging print statement accidently left in 1.0b3
  - Fixed several bugs in "Layer Data Math Operation" function

1.0b3 - 2001-01-11
  
  - Reorganized menus to resemble WorldWatcher more
  - Use index of data files rather than layer files for more sane 
    behavior.
  - Added "Math Operation" capability to shape files, allowing you to 
    create new fields by performing math operations on existing fields
  - Improve efficiency of data caching
  - Added contour line generator to WorldWatcher layer
  - Allow you to save data files inside Map View file for better 
    portability.
  - Transparent access to remote data files over the Internet
  - Improved error handling
  - Updated documentation
  - Drag and drop now works properly and no longer requires you to hold 
    down the Control key when dragging from a Map View to a Data Library
  - Better handling of files on locked media (e.g., CD-ROM)
  - Tables now calculate their sizes correctly
  - Many others I can't remember right now

1.0b2 - 2000-10-20

  (no notes available)

1.0b1 - 2000-09-13

  Fist (semi-)public release.