Command: whatis
  WHATIS displays descriptions of programs based on the Appinfo
  (.LSM) files.
  Use APROPOS to find programs that are apropriate for the given
  subject.
  Use WHATIS with a program name to get a one line description of that
  program.
  Use WHATIS without a program name to get a one line description of
  all the external programs and utilities in your FreeDOS installation.
  Internal commands (commands of command.com) are not displayed.
Syntax:
  APROPOS [options] subject
          Find commands related to the given subject
  WHATIS [options] [command]
          Displays a one-line description of the given command.
          If no command is specified, all commands and their 
          one-line descriptions are listed
  WHATIS  /B [options]
          Rebuilds the whatis database for use with WHATIS and APROPOS
Options:
  /S [path]  Non-default path to the lsm appinfo files.
  /D [path]  Non-default path for whatis database location.
  /?         Shows the help.
Comments:
  These are FreeDOS clones of the GNU/Linux commands "apropos and whatis"
  APROPOS and WHATIS base their help on the lsm files stored in the 
  APPINFO directory.
  The first time it is run, APROPOS / WHATIS builds a database and stores 
  it in the help directory in the FreeDOS installation. This database can 
  be recreated by using:
    WHATIS /B
Examples:
  apropos edit  will display a list of editors
  apropos disk  will display a list of disk utilities
  whatis edit   will display a short information about edit
  whatis        will display a short information about the DOS commands
See also:
  apropos
  fasthelp
  fdhelp
  help
  How to use the Help
  htmlhelp
  Copyright © 2003 Robert Platt, updated 2007 and 2020 by W. Spiegl.
  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.