The typesetting program called TeX is used for formatting a Texinfo file. TeX is a very powerful typesetting program and, if used right, does an exceptionally good job. See section How to Obtain TeX, for information on how to obtain TeX.

The makeinfo, texinfo-format-region, and texinfo-format-buffer commands read the very same @-commands in the Texinfo file as does TeX, but process them differently to make an Info file; see section Creating an Info File.