On Tue, 30 Apr 1996, Ben Kosse claimed:
Also, everyone remember to put ONE space after periods, even with monospaced
type. (I was involved in a discussion with various people who should know,
I thought this was only for published works, ie. Newspapers, books, etc.
Unpublished essays, stories should have two spaces...?
Nope. You're always supposed to use one space after a period, question
mark, exclamation point, or colon. It was an old secretaries myth about 2
spaces, and therefore found its way into typing classes, then english classes.
Even if those were its origins (which sounds doubtful), putting two spaces
after a period is now accepted manuscript format.
Editors gripe if you submit a manuscript with only one space after each
period.
-joyce, Disciple of Kasumi
Joey-kun no iinazuke!!