The documentation files for the TeX text formatting system The tetex-doc package contains documentation for the TeX text formatting system. If you want to use TeX and you're not an expert at it, you should install the tetex-doc package. You'll also need to install the tetex package, tetex-afm (a PostScript font converter for TeX), 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), tetex-latex (a higher level formatting package which provides an easier-to-use interface for TeX) and tetex-xdvi (for previewing .dvi files).