This article is from the misc.writing Writing FAQ, by Wendy Chatley Green firstname.lastname@example.org with numerous contributions by others.
All of the following rules can be broken. However,
any time you break one of them, you run the risk of
irritating an editor. To quote Strunk and White:
"It is an old observation that the best writers
sometimes disregard the rules of rhetoric. When they do so,
however, the reader will usually find in the sentence some
compensating merit, attained at the cost of the violation.
Unless he is certain of doing as well, he will probably do
best to follow the rules."
Manuscripts should be typed in black ink using a new
ribbon or printed on a daisy wheel, ink-jet or laser
printer. Never write or print a manuscript by hand. Each
page must be doubled-spaced (one blank line between each
line of type) and each side must have at least a one-inch
margin. Use white medium-weight business letter-sized paper
(either 8-1/2 x 11 or A4) and type or print only on one
side. Once the manuscript is typed or printed, do not
staple, bind, or otherwise attach the pages to one another.