Command: cls
  CLS clears the screen.
  CLS is a BATCH-FILE / AUTOEXEC.BAT command.
  It can also be used in command line.
Syntax:
  cls
Options:
  - none -
Comments:
  CLS removes the whole text on the screen.
  CLS can also be used outside a batch file.
  CLS is a command internal to command.com and needs no other file
  in order to work.
Examples:
  IN A .BAT FILE / AUTOEXEC.BAT OR in COMMAND LINE:
    cls
See also:
  autoexec.bat
  batch files
File:
  Please read this command's lsm file also.
  You will find the updated version (internet) here and
  the version described in this manual page here.
  The lsm file contains information about the name of the programmer,
  the download site, and some other command related information.
  Copyright © 1998 Jim Hall, updated 2007 by W. Spiegl.
  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.