Harvard Graphics

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File Format
Name Harvard Graphics
Ontology
Extension(s) .cht, .ch3, .shw, .sh3, .pr4, .sym, .sy3, others
PRONOM x-fmt/32, x-fmt/101, x-fmt/324, x-fmt/325
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.

Contents

Formats

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

  • .CHT - Chart (vector graphics) - x-fmt/325
  • .CH3 - Chart (v3) - x-fmt/32
  • .SHW - Show (v2) - x-fmt/324
  • .SH3 - Show (v3) - x-fmt/101
  • .PRS - Presentation (v1-3) - fmt/1491
  • .PR4 - Presentation (v4) - fmt/1492
  • .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

Sample files

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