| Changes to the Program   | 
      
        | Version 2.13.0: December 18, 2011 
            Modified XYZ file support for a new feature that could
              be called XYZZ where the first Z is for a top surface and the second
              Z is for a bottom surface. When a XYZZ file is read a watertight mesh
              is automatically created. 
            Added reading of embedded textures from XGL and ZGL
              files. 
            Added reading and writing of embedded textures for VRML
              files.  
            Added support for reading Collada DAE and Google Earth
              KMZ files. | 
      
        | Version 2.12.3: January 15, 2011 
            Fixed a problem where the default layer color was set
              to black instead of white. 
            Fixed a problem in the File Extensions dialog box that
              displayed the file extensions incorrectly | 
      
        | Version 2.12.2: January 2, 2011 
            Added support for writing KMZ files for Google Earth. | 
      
        | Version 2.12.1: October 3, 2010 
            Added an option that uses the OpenGL view window to convert a 3D
              mesh to 2D lines which are outlines drawn around the outer edges of
              all visible layers.  The lines will be in the XY plane placed
              at Z equals zero. 
            When converting a DEM landscape to a polygon mesh, an
              option was added to drop from the mesh those polygons that are just
              at sea level while keeping all polygons below sea level. 
            Added support for using an OpenGL off-screen PBuffer
              (Pixel Buffer) instead of using the main OpenGL view window when creating
              images for some use which means that the main OpenGL view window can
              be partially or completed covered during the operation. | 
      
        | Version 2.12.0: June 24, 2010 
            Added initial support for reading and writing modo LXO
              files plus batch creation of clip maps which are saved to modo LXL
              files. 
            Fixed a problem where some 3DMF files were not read. 
            Reading DXF files: fixed problems where elevations were
              not being added to the POLYLINE entity in versions R13 and newer and
              constant width was not being used for the LWPOLYLINE entity. | 
      
      
        | Version 2.11.7: January 19, 2010 
            Fixed several small problems. | 
      
      
        | Version 2.11.6: October 9, 2009 
            Added scroll bars to the main window and various dialogs
              so that the windows will display on laptop computers using screen resolutions
              less than 1024 by 768 pixels. 
            Adjust object module: When the 'rotate about origin'
              feature is selected the coordinate system axes will display in the
              center of the view window and the 3D object will disappear out of the
              view window if it is far enough away from the origin. Added an option
              to turn off the display of the axes so that the 3D object appears in
              the center of the view window. 
            Added an option to display a background image in the
              OpenGL view window. 
            Added an option to save UV texture coordinates when
              saving clip map objects to LWO files. 
            Reduce polygons module: calculations are slightly faster
              and four radio buttons control how many vertices are added or deleted
              for each movement of the scroll button. 
            Stage was modified. A texture image can be displayed
              on the stage and the stage can be used outside of the 'Avatar and Animation'
              module. | 
      
      
        | Version 2.11.5: August 18, 2009 
            Toolbar changes: revised icons, added a popup toolbar
              and a toolbar under the Tool Palette, added variable gaps between the
              buttons and increased the custom toolbar layouts from 1 to 5. 
            Added an optional lock to block the reset of the camera
              pivot point to the center of the object by clicking the middle mouse
              button with the cursor over an empty area of the view window. 
            Added an option that allows the camera to rotate around
              the local coordinate system of the 3D object. 
            Added additional light parameters for output to a Kerkythea
              scene file. 
            Added a new control that simulates holding down the
              'ctrl' key when using keyboard shortcuts. 
            Added an option that allows polygons to be hid temporarily
              to see inside a mesh for the 'Modify Quads', 'Triangle Delete', 'Triangle
              Fracture' and 'Triangle Relocation' modules. 
            Layers for 'holes' and 'shared edges' created from one watertight
              check are automatically deleted when the next watertight check is done
              if the names of those layers have not been changed. 
            Added an option so that text from a DXF or VRML file
              can be saved to a DXF file as either 3D objects or as DXF TEXT entities. 
            Added an option so that text in a VRML file can be converted
              to 3D objects. | 
      
      
        | Version 2.11.4: June 1, 2009 
            Added an option so that an alpha channel mask can be
              saved to a Kerkythea scene file for each PNG image from a Chief Architect
              project. | 
      
      
        | Version 2.11.3: May 5, 2009 
            Fixed a problem where long texture file names were being
              truncated when reading VRML files. | 
      
      
        | Version 2.11.2: May 2, 2009 
            Added support for RWX avatar tag numbers from 55 to
              81. 
            Added support for VRML files including lights and cameras
              that were written by Chief Architect. 
            Added writing of Kerkythea XML files. Camera and lights
              from a VRML 2 (97) file are written to the XML file. | 
      
      
        | Version 2.11.1: February 16, 2009 
            Blocked warning messages about quads that should not
              have been displayed during the building of DXF regions and exploded
              blocks. | 
      
      
        | Version 2.11.0: February 11, 2009 
            The help file was transferred to HTML Help from WinHelp
              so that the help file can be displayed on computers using the Vista
              operating system. | 
      				
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