Stoker,
From what I have been able to glean, the .prn file format does not exist, per se. What gets written to the prn file depends on which printer/driver was in use at the time. It is simply a stream of printer commands and could represent PCL, Postscript, etc. Sounds like a tall order for software to re-create the original data from this in a blind fashion. Anyone else have more on this?
Regards,
M. Smith