E R R O R L E V E L S

    To ease operation in batchfiles, GoldED exits with a set of
    errorlevels:

        100 = QBBS Index errors. (See REBUILD keyword).
        004 = Echomail entered.
        002 = Netmail entered.
        001 = Local mail entered.
        000 = Exit okay. No mail entered.

        Other values: Some sort of error.

    Add values together to find the combined errorlevels. For example,
    errorlevel 6 is returned if netmail (2) and echomail (4) was
    entered.

    See the RUNGOLD.BAT file for a useful skeleton for automated
    operation using the errorlevels.