REM Command

     All the strings which begin with REM are considered to be comments.
These comments may contain, for instance, the information about the purpose
of the command or its part. You also may put REM before any string to nulify
its effect.

Syntax:    REM [text]

     The comment strings, like any strings in a batch file, are displayed on
the screen during the execution. To prevent displaying the string, put the @
sign in its beginning.

     REM this remark is displayed
    @REM this remark is not displayed