1    /ADDRESS

    (Default) Specifies that the defined symbol is an abbreviation
    for an address expression. In this case, parameter is an address
    expression.

2    /COMMAND

    Specifies that the defined symbol is treated as a new debugger
    command. In this case, parameter is a quoted character string.
    This qualifier provides, in simple cases, essentially the same
    capability as the following DCL command:

    $ symbol := string

    To define complex commands, you might need to use command
    procedures with formal parameters. For more information about
    declaring parameters to command procedures, see the DECLARE
    command.

3    /LOCAL

    Specifies that the definition is valid only in the command
    procedure in which it is defined. The defined symbol is not
    visible at debugger command level. By default, a symbol defined
    within a command procedure is visible outside that procedure.

4    /VALUE

    Specifies that the defined symbol is an abbreviation for a value.
    In this case, parameter is a language expression in the current
    language.