.FN3 | Software Publishing Corporation (SPC) | Pliki z czcionkami | Harvard Graphics 3.0 Font File | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.MA3 | Software Publishing Corporation (SPC) | Pliki wydawcy | Harvard Graphics Macro | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.PPL | Open Source | Pliki wydawcy | Free Pascal Dynamic Library | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.PR4 | Software Publishing Corporation (SPC) | Pliki z danymi | Harvard Graphics Presentation | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.PRS | Software Publishing Corporation (SPC) | Pliki z danymi | Harvard Graphics Presentation | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.SH3 | Software Publishing Corporation (SPC) | Pliki z danymi | Harvard Graphics 3.0 Presentation File | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |
.TP3 | Software Publishing Corporation (SPC) | Pliki z szatami graficznymi | Harvard Graphics DOS Template File | Harvard Graphics Presentation Software | Software Publishing Corporation (SPC) |