info (5) - Linux Man Pages
info: readable online documentation
info - readable online documentation
DESCRIPTIONThe Info file format is an easily-parsable representation for online documents. It can be read by emacs(1) and info(1) among other programs.
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.