@feld @dexter WordPerfect 3.5e was released for free on Mac OS Classic.
https://liam-on-linux.livejournal.com/80768.html
Or WordPerfect 5 for DOS works very well under DosBox. And spits out perfectly cromulent files in a range of formats you can then use in other things.
Don't expect Unicode though.
Both are quite nice ways to work quietly for a bit.