Interword is a Commodore 64 assembly language port of an Amiga word processor.  The software was written in 1992 on a commission from Interactivision, a software company based in Silkeborg, Denmark.

Not that many people care, but this program works really nice with the Blue Chip d12/10 printer for the Commodore 64.   Here's a YouTube video and the Author Martin Olsen has added some nice commentary.

Source Code posted on GitHub.