The DEPOSIT command is the default at RdbALTER command level.
    If no other command is present following the prompt, RdbALTER
    automatically parses the command line as a DEPOSIT command.

    The specification of the field to be altered must be followed by
    an equal sign (=)  and a string of characters specifying the new
    value of the altered field.

    Do not use the DEPOSIT command immediately after a ROLLBACK
    command. The ROLLBACK command removes current page context.
    If you issue a DEPOSIT command immediately after a ROLLBACK
    command, a warning message is returned indicating that there
    is no current page. For this reason, you must specify your
    location again by using either the DISPLAY or the AREA . . . PAGE
    command immediately after a ROLLBACK command but before a DEPOSIT
    command.