/SELECT={TYPE:type, LEVEL:level}

    Allows the user to control what is traced by named
    category.  The value list should consist of paired
    type and level specifications, with the type preceding
    the level.  If a TYPE specifier is not followed by a
    level specifier, tracing for that type will be set to
    the default level.  If a LEVEL specifier is not preceded
    by a TYPE specifier, the level will be set for all types.

    The default tracing level is:
            1 - standard XFC image
            4 - MON image
            4 - DEBUG image

    An attempt to set the level above the maximum for any type
    results in a warning and the level being set to the maximum.

    The trace types and level selected in the value list of
    one instance of the /SELECT qualifier enables tracing of
    those events and disables all others.  (If multiple
    SET TRACE/SELECT commands are used, only the selections of
    the last will take effect.)

    The LOCK category has 6 possible levels (1 through 6).
    All other categories have 4 possible levels (1 through 4).