The following prefixes normally don't require a hyphen: ante,
anti, bi, bio, co, counter, extra, infra, inter, intra, macro, mid,
mini, multi, non, over, post (after), pre, pro, pseudo, re, semi,
sub, super, supra, trans, ultra, un, under.
Exception: when a prefix stands alone, it carries a hyphen (over-
and underused).
Other exceptions: the prefix carries a hyphen if the second element
is a capitalized word or numeral (un-American, pre-1914) or the compound
is a homonym (re-create means to create again, recreate means to take
recreation).
When the prefix ends with a vowel and the root begins with a vowel,
such as pre-existing, hyphenate.
When a measurement is used as an adjective, use
a hyphen to connect the number to the measurement, as in 10-point
type. Otherwise, don't use a hyphen.
Hyphenate a fraction written as words: Three-fifths, Four and one half.
Hyphenate a two-element number under 100: Sixty-three, twenty-one.
Don't add a hyphen before text in
Rich Text Area or Long Text Area.
When alphabetizing terms, start
with spaces and hyphens, followed by numbers, followed by letters.
Always treat a hyphen as a space. For example:
W2L
Web Tab
Web-to-Lead
Web2Lead
Use an en dash (–)
instead of a hyphen to indicate ranges, such as 1991–2010.
j