                            CALL                                [new DOS 3.3]

This internal command allows a BATCH file to simply call another BATCH 
file as a subroutine. It is similar to but requires less typing than the 
COMMAND /C method available with previous versions of DOS.

    CALL [d:][pathname]filename [value1 ... [valuen]] 

filename is the name of the BATCH file. Do not include the .BAT extension.
    [d:] and [pathname] are optional.

value1 ... valuen are the (optional) values to be substituted for the
    replaceable parameters (if any) in the BATCH file being executed.

Any changes the called BATCH file makes to the DOS environment space will 
be lost when it EXITs. Piping and redirection should not be used with this 
command.
