In the LaTeX document preparation system, additional features are often provided by "packages," which generally consist of one or more files containing extra definitions and macros. For example, the "graphicx" package provides the means to include graphics or color in your document. Some packages are distributed with LaTeX; others are contributed by expert users worldwide. Most packages have documentation written by the author.
The RCS directory /campus/doc/text/Latex2e/Packages contains a file called package-summary, which provides a one-line description of each LaTeX2e package installed on the UNIX systems. There are also subdirectories containing individual documentation for packages. The subdirectory called Contrib is continually expanding as we learn of new and useful user-written packages and bring them to RCS.
Some of the more recent additions to Contrib are described below. Each package is loaded with the LaTeX command \usepackage{packagename}, and the documentation files mentioned are all in the directory /campus/doc/text/Latex2e/Packages/Contrib/.
The "sectsty" package provides a set of commands for easily changing the font and positioning of the various standard sectional headings, such as \chapter, \section, and \subsection. Complete documentation is in the file sectsty.dvi.
This package defines the \url command, particularly useful for hypertext links, e-mail addresses, directories/paths, etc. For example, the command \url{http://www.rpi.edu/~doej/} will format the URL correctly. Details for using this package are described in the file url.txt.
The hyperref package adds information to the dvi file that the output device driver (e.g., dvips) will use to make links from the table of contents entries and cross references. Just add the command \usepackage[dvips]{hyperref} to your LaTeX file, making sure it comes after any other packages.
To create the PDF file, run LaTeX as usual and then run dvips to create a PostScript file. (Note that xdvi doesn't understand the link information and will spew out a lot of warning messages.) Finally, run the Acrobat distill program to create the PDF file. Note that to access distill, you must specify the complete pathname of your file, even if it's in your current directory. For example, assuming your LaTeX file is named myfile.tex, the commands would be:
latex myfile dvips myfile -o (create myfile.ps) distill ~/myfile.ps (create myfile.pdf)
For more information about the capabilities of the hyperref package, use the Acrobat Reader program (acroread) to view the file hypermanual.pdf.
The colortbl package provides commands such as \columncolor and \rowcolor that allow you to color certain rows or columns in tables. The file colortbl.ps (view this with ghostview) contains instructions and colorful examples.
The eurosym package provides the command \euro\ for the new European currency symbol. The command calls upon a new set of fonts, in which the symbol has been constructed according to the official European Commission's definitions. The documentation file is eurosym.dvi.
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