+=================================+
                      |                                 |
                      |             RESCAN              |
                      |                                 |
                      +=================================+


SUMMARY

    This program allows the user to (re)start execution of a Command Sequence
(CS) file at any line within it.


SAMPLE INVOCATION

    RESCAN :F3:TEST.CS


ACTIONS PERFORMED

    The action performed by this program is to read and display the Command
Sequence file, line-by-line; and after each line is displayed, read a
character from the keyboard to determine whether to: exit, begin Command
Sequence file execution, or return to interactive mode.

    The command characters and actions associated with them are:


        ESCAPE -- the submit file is restarted at the currently displayed line

        CONTROL$C -- Rescan returns the system to interactive mode and exits

        TILDA -- ignored

        ANYTHING ELSE -- the next line of the file will be printed



CAVEAT

    Due to the way ISIS handles the console device, reaching the end of the
file will cause an ISIS error 29 with a subsequent reboot.