| filename extensions | art-335 |
| hpg | |
| TechTarget file types | art-336 | HPG-HPGL-Plotter-vector-graphics-AutoCAD |
| TechTarget file types | art-336 | HPG-HPGL-Plotter-vector-graphics-Harvard-Graphics |
| English | eng-000 | HPGL Plot File |
| English | eng-000 | HPGL Plotter vector graphics |