The HPGL files were then converted using the in-house general drawing editor EDGR. The GIFs and thumbnail GIFs were generated using an experimental GIF output feature in EDGR. Since the thumbnails were generated from the line drawing directly, the lines are always at least one pixel wide. For this demostration, no effort was made to clean up the thumbnails by removing now-unreadable text, etc.
The PostScript files were generated from the EDGR drawings.
Andrew Daviel