FullWrite

FullWrite Professional was a word processor application for the Apple Macintosh, released in late 1988. Originally developed by Ashton-Tate later sold to Akimbo Systems in 1993.

File Identification
FullWrite version 2 has Type  and Creator

FullWrite version 1 has Type  and Creator

The last 5 bytes of each file are hex values  which is ASCII " FWRT"

Links

 * FullWrite_Professional : Wikipedia
 * the Gryphel Project
 * Computer History Museum