LaTeX is a complicated typesetting program. Here are some hints and links to other macros or programs to make writing a LaTeX document easier.
Mathematical expressions that are part of the running text are delimited by a single dollar sign ($), e.g., $\pi r^2$ yields #r2. To get the appropriately sized superscript or subscript in the roman font, use the \rm command, e.g., $J_{\rm HF}(t)$ produces JHF(t).
Displayed equations can be delimited in several ways. See the User Guide for details on display equation markup.
While it is possible for authors to assign their own equation numbers, it is easier to let LaTeX number them automatically. By default, LaTeX will number equations sequentially from the beginning of the paper to the end.
Cross-referencing equations, tables, and figures in text depends upon the use of "keys," which are defined by the user. The \label command is used to define cross-reference keys for LaTeX; \ref is used to refer to them. Keys are simply text strings that serve to label equations, tables, and figures, so that they may be referred to symbolically in the text. For sections and the like, place \label commands immediately after the markup command that starts the structure being referenced. For figure and table captions, place the \label command \caption, \tablecaption, or \figcaption , e.g.,
\tablecaption{This is a caption.\label{tab1}}
Do not put references to page numbers in your paper.
LaTeX keeps track of autonumbered counters and cross-reference information by maintaining an auxiliary file in the same working directory as the source file. The auxiliary file will have an extension of .aux. This file should not be deleted, since subsequent LaTeX processing uses the auxiliary data to resolve references, etc.
The auxiliary file mechanism makes it necessary to run LaTeX on a given source file more than once to ensure that the cross-reference information has been properly resolved. When changes are made that affect the number or the placement of equations, tables, and the like. LaTeX will issue a warning message that advises the user to "rerun to get cross-references right," in which case, LaTeX should be run again.
To add line numbering to your paper obtain the lineno package. After obtaining the lineno.sty file, add these commands before the \begin{document} call near the top of your LaTeX manuscript:
\usepackage{lineno}
\linenumbers
This places continuously running numbers in the left margin. See the user manual to determine how to use lineno's many other options. Note that while lineno works with AASTeX (v5.2) in both single and double column preprint modes, it does not mark both columns when used with the emulateapj classfile. Only one of the two columns are marked.
When the use of the \authorcomment command is insufficient to track changes the Trackchanges style file can be used. Trackchanges allows multiple authors to edit and annotate a LaTeX document. After obtaining the trackchanges style files, simply add:
\usepackage{trackchanges}
\addeditor{ABC} % where ABC is an editor identifier
to the top of your LaTeX manuscript before the \begin{document} call. The five commands used to most often are:
\note[editor]{The note}
\annote[editor]{Text to annotate}{The note}
\add[editor]{Text to add}
\remove[editor]{Text to remove}
\change[editor]{Text to remove}{Text to add}
where "editor" is the editor identifier defined earlier. The user manual provides numerous examples of the output and descriptions of the different options available.
The assemble perl script by Robert Lupton will merge multiple postscript files into a single postscript file. K.Z. Stanek provides some documentation on its use here. Stanek's main use of assemble.pl is to create meeting posters but the code can also be used to make more compact paper figures by merging multiple component figures into a single one.
For authors who use the \input and \include commands to reference external latex files such as tables and sections, it is sometimes necessary to "flatten" the LaTeX structure by merging all the external files into one. A strong advantabe of the single, flat LaTeX file is that the AAS journal's metric counters (e.g. ApJL manuscript length calculator) only accepted a single, combined LaTeX manuscript. Two source codes are available to merge LaTeX structures. One is a C code called flatten and the other is a Perl script called latexexpand.
Two programs are available to covert Microsoft Excel tables into LaTeX tabular format: excel2latex and xl2latex.
Similarly, many programs are available to convert Microsoft Word files into LaTeX format. The programs are WordML2LaTeX, catdoc, and word2latex.