Description:

LaTeX is a front end for the TeX text formatting system. Easier to use
than TeX, LaTeX is essentially a set of TeX macros which provide
convenient, predefined document formats for users.

If you are installing teTeX, so that you can use the TeX text formatting
system, you will also need to install tetex-latex. In addition, you will
need to install tetex-afm (for converting PostScript font description
files), tetex-dvilj (for converting .dvi files to HP PCL format for
printing on HP and HP compatible printers), tetex-dvips (for converting
.dvi files to PostScript format for printing on PostScript printers) and
tetex-xdvi (for previewing .dvi files in X). If you're not an expert
at TeX, you'll probably also want to install the tetex-doc package,
which contains documentation for TeX.