texinfo - software documentation system
Texinfo is a documentation system that uses a single source file to produce both online information and printed output. It is primarily designed for writing software manuals.
For a full description of the Texinfo language and associated tools, please see the Texinfo manual (written in Texinfo itself). Most likely, running this command from your shell:
info texinfoor this key sequence from inside Emacs:
M-x info RET m texinfo RETwill get you there.
http://www.gnu.org/software/texinfo/
or any GNU mirror site.
Please send bug reports to bug-texinfo@gnu.org, general questions and discussion to help-texinfo@gnu.org.
info(1), install-info(1), makeinfo(1), texi2dvi(1), texindex(1).
emacs(1), tex(1).
info(5).