The SHOW SYMBOL command lets you see symbols in the program
    address domain, or symbols you have defined with the
    DEFINE/COMMAND command.

    You can use the /ADDRESS and /DIRECT qualifiers or the IN clause
    only if /DEFINED is not specified. If you do not specify an
    IN clause, then the whole program will be the scope for symbol
    selection.

    The /DEFINED qualifier can not be used in combination with any
    other qualifiers to the SHOW SYMBOL command.