The INCLUDE command adds a new data kind into the current plot.
    It is used with the EXCLUDE command to incrementally build one
    plot that contains a maximum of eight data kinds per bucket. The
    data kinds must be compatible with the node specifications for
    the current plot. If you want a new set or order of the buckets,
    then you must issue a new PLOT or TABULATE command. The use of
    INCLUDE command qualifiers does not affect the old qualifiers
    in the PLOT/TAB default entry of the current active plot. If
    no active plot is available an error message is displayed.
    A different filter can be applied to the data kind for every
    INCLUDE command. The first page of the newly created plot appears
    after you issue the command.