3/8 in., and the
\widetext
command will set the text 7 in. wide. The
\widetext command
is needed to set very long equations. See the section on
displayed math, below.
Paragraphs always begin with a blank input line. Do not hyphenate words at the end of a line; TEX will do this. Continue to hyphenate modifiers within a line of text, e.g., ``author-prepared copy.''
Use curly quotes for quotation marks around quoted text (``xxx'') not straight quotes ("xxx" ). [For opening quotes, this is two octal 140 characters (hex 60); for closing quotes, this is two octal 047 (hex 27) characters.]
There are two commands that control the width of
the text across the page in the galley
format;
\narrowtext will set
the column width to 33/8 in., and the
\widetext
command will set the text 7 in. wide. The
\widetext command
is needed to set very long equations. See the section on
displayed math, below.
Neither \narrowtext or \widetext have any effect on the output if the front matter calls for the preprint form. The preprint output is a uniform 6 in. throughout.
Don't use \smallskip, \bigskip, or any other vertical motion commands. Horizontal motion commands are unnecessary as well.