XyWrite

XyWrite is a word processor for DOS and Windows modeled on the ATEX mainframe program. Popular with writers and editors for its speed and degree of customization, XyWrite was in its heyday the house word processor in many editorial offices, including the New York Times from 1989 to 1993. XyWrite was written by David Erickson and marketed by XyQuest from 1982 through 1992, after which it was acquired by The Technology Group. The final version for DOS was 4.18 (1993); for Windows, 4.13.

Read more about XyWrite:  Features, History and Current Usage, Version History