You invoke the Compaq Ada program library manager interactively
    or with a one-line DCL command. To invoke the program library
    manager interactively, enter the following DCL command:

    $ ACS

    The program library manager responds with the following prompt:

    ACS>

    You can now enter any ACS command. To return to the DCL command
    line, type EXIT or press Ctrl/Z.

    To enter an ACS command as a DCL command, append the command to
    the ACS prefix. For example:

    $ ACS SET LIBRARY [ADA.AUGUSTA.ADALIB]

    If your ACS command is too long to fit on a single line, you can
    continue the command by typing a hyphen (-) as the last character
    of a line. For example:

    ACS> LINK/DEBUG/MAP/FULL/CROSS_REFERENCE -
    _ACS> MY_MAIN_PROGRAM -
    _ACS> [MATRIX.LIB]MATHPACK.OLB/LIB

    An ACS command can have a maximum of 1024 characters; individual
    command lines can have a maximum of 256 characters.