By default, all software supports multiple file extensions. PG4UW supports at least 2 different file extensions. The basic files that PG4UW supports are .PRJ. However, not all of the extensions listed on the list are always used to save the effects of work in PG4UW. Very often, files with such extensions are used as source data files used by PG4UW.
PG4UW can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via PG4UW and try to save it in another file format, also supported by PG4UW.