The following commands are used with command procedures and log
    files:

    @ (Execute Procedure)  Executes a command procedure
    (SET,SHOW) ATSIGN      (Establishes, displays) the default file
                           specification that the debugger uses to
                           search for command procedures
    DECLARE                Defines parameters to be passed to command
                           procedures
    (SET,SHOW) LOG         (Specifies, identifies) the debugger log
                           file
    SET OUTPUT [NO]LOG     Controls whether a debugging session is
                           logged
    SET OUTPUT             Controls whether, in screen mode, the
    [NO]SCREEN_LOG         screen contents are logged as the screen
                           is updated
    SET OUTPUT [NO]VERIFY  Controls whether debugger commands are
                           displayed as a command procedure is
                           executed
    SHOW OUTPUT            Identifies the current output options
                           established by the SET OUTPUT command