Release Notes: This release has simpler, better entity translation logic. Also, the -s and -x options are removed.
Release Notes: This release adds a BSD port fix.
Release Notes: Simplified and improved ntroff expression evaluation.
Release Notes: New logic prevents spurious warnings from .in +N just before .nf. Many more instances of .ta are now automatically handled. Multi-file compilation was broken, and is now repaired.
Release Notes: This release deals with W3C moving a math DTD, improves .Bl/.El handling and updates canned strings in mdoc, accepts \(hy in name sections, handles   (inadvertently omitted from DocBook v4), and adds -V for a version option.
Release Notes: Trailing comments after table rows are now preserved (example: matherr(3)). Support for some previously missing groff extension glyphs was added. Handling of .Bd/.Be in mdoc was improved.