infokey - compile customizations for Info
infokey [OPTION]... [INPUT-FILE]
Compile infokey source file to infokey file. Reads INPUT-FILE (default
  $HOME/.infokey) and writes compiled key file to (by default) $HOME/.info.
  - --output FILE
- output to FILE instead of $HOME/.info
- --help
- display this help and exit.
- --version
- display version information and exit.
Email bug reports to bug-texinfo@gnu.org, general questions and discussion to
  help-texinfo@gnu.org. Texinfo home page: http://www.gnu.org/software/texinfo/
Copyright © 2003 Free Software Foundation, Inc. There is NO warranty. You
  may redistribute this software under the terms of the GNU General Public
  License. For more information about these matters, see the files named
  COPYING.
The full documentation for infokey is maintained as a Texinfo manual. If
  the info and infokey programs are properly installed at your
  site, the command
  
  - info infokey
should give you access to the complete manual.