Harvard Graphics

Harvard Graphics (originally named Harvard Presentation Graphics) was a presentation and vector graphics program, used mainly on the MS-DOS platform. Technical information about its file formats is difficult to find.

Formats
Some of the file formats used by Harvard Graphics are listed here, by file extension.


 * .CHT - Chart (vector graphics) -
 * .CH3 - Chart (v3) -
 * .SHW - Show (v2) -
 * .SH3 - Show (v3) -
 * .PRS - Presentation (v1-3) -
 * .PR4 - Presentation (v4) -
 * .SYM - Symbol (v2)
 * .SY3 - Symbol file (v3)
 * .PL - Palette
 * .PL3 - Chart palette (v3)
 * .PC3 - Custom palette (v3)
 * .FN3 - Font (v3)

Related formats

 * Speedo (.SPD) - Font format supported by Harvard Graphics 3.0

Software

 * Canvas

Sample files

 * 2345.ZIP - Contains some .SYM and .CHT files.
 * HMMWV.ZIP
 * POLIT.ZIP
 * HGRAPH1.ZIP, HVDGRAF1.ZIP, SYM6.ZIP
 * https://telparia.com/fileFormatSamples/image/harvardGraphicsChart/

Links

 * Harvard Graphics
 * , from the Encyclopedia of Graphics File Formats