Format instructions for authors working directly with a LaTeX file

Authors working directly with a LaTeX file can produce a file complying with our format guidelines as follows.

1. Sectioning: Create section heads using \section, \subsection, and related commands.
2. Theorems: Create theorems or other similar objects by using \begin{theorem} ... \end{theorem} and its relatives. (Proofs should use \begin{proof} ... \end{proof} if available in the style you are using.)
3. No manual spacing: Whenever possible, avoid using \vskip, \vspace, \hskip, or \hspace commands, or other commands that insert ad hoc space.
4. Cross-references: To create a cross-reference, (a) label the object to which you wish to refer using \label{...} and (b) insert a reference to that label using \ref{...}.
5. Quotation marks: A single opening quotation mark is produced by typing ` (a "back tick") and a single closing quotation mark is produced by typing ' (a single quote). A double opening quotation mark is produced by typing two back ticks and a double closing quotation mark is produced by typing two single quotes.
6. Punctuation and displayed math: The journal style use punctuation at the end of displayed math. (E.g. if a display ends a sentence, it should have a period at the end of it.)
7. Separating math and text: Words and punctuation should not be included in mathematical expressions that are part of the text (i.e. not displayed). In particular, any punctuation following a mathematical expression should be part of the text, not the math. For example, type "$x > 0$, so that" and not "$x > 0,$ so that". (Including the comma as part of the math results in an incorrect amount of space between the comma and the following text.)

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