The mfg/pro version might be different than the progress version (it usually is).
From the progress editor run - message proversion view-as alert-box.
BUT docxfactory is actually written in c/c++ with progress 4gl wrappers
so it could be ported backwards to progress 8 or maybe 7 (i don't remember if v7 supports calling c shared libraries)
and docxfactory can also be used from the command line so you can shell out no matter what version.
For now I've only uploaded Windows and Linux binaries but the project is going to be open sourced so you could compile it on HPUX, I could help you.