ReGIS
Convert HPGL to ReGIS and a ReGIS image repository
...Convert HPGL plotter output files into DEC ReGIS files suitable to display on DEC ReGIS capable terminals and terminal emulators. Also this is a repository for contributed ReGIS files that can be freely used. If you have Regis files to contribute e-mail me.
The installation zip file contains a number of HPGL files and a batch file to convert them demonstrating command line inputs as well.
Some of the ReGIS files provided are dynamic and show a changing display rather than a static one.