Harvard Graphics

File Format
Name	Harvard Graphics
Ontology	Electronic File Formats Document Harvard Graphics
Extension(s)	.cht, .ch3, .shw, .sh3, .pr4, .sym, .sy3, others
Released	1986

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 - Presentation (v2)
• .SH3 - Presentation (v3)
• .PRS - Presentation (Harvard Graphics for Windows)
• .PR4 - Presentation
• .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

Sample files

• 2345.ZIP - Contains some .SYM and .CHT files.

Links

• Wikipedia:Harvard Graphics
• Harvard Graphics File Format Summary, from the Encyclopedia of Graphics File Formats