FWIW those particular formats are widely understood even if they are proprietary (well, at least in WordStar's case). And as long as the software runs (be it na

FWIW those particular formats are widely understood even if they are proprietary (well, at least in WordStar's case). And as long as the software runs (be it natively or via an emulator or VM), you can always open and convert/print the files (e.g. you could use vDOS to run WordStar or whatever and use its printer emulator functionality with Windows' PDF printer to create a PDF from the WordStar files).