Information about the .wp4 (wp4) file type

Below is all the information we have available on file about the .wp4 (wp4) file type.

.wp4
Word Perfect document. A .wp file is word processed document generated using Word Perfect.

.wp4 files were created with older versions of Word Perfect, possibly version 4 for DOS. Later versions of Word Perfect saved files as .wpd files.

Where this is available we would like to include file format information on .wp4 files, as well as information on how to view or open files of type .wp4. If you know of any information which we have missed then please let us know.