HISTOGRAM

        [GREG1\]HISTOGRAM [Array_X Array_Y] [/BASE [Ybase]] [/BLANKING  Bval
    Eval] [/FILL [pen_num]]

    Connects the coordinates read by COLUMN  X  and  Y,  or  stored  in  the
    variables  Array_X Array_Y as a histogram.  The /BASE option specifies a
    "true" histogram, connected to a  base  level  (Default  Ybase=0).   The
    /BLANKING  option will supersede the current blanking values (as defined
    by SET BLANKING command) so that data points with abs(Y(i)-Bval) <  Eval
    are not plotted. Eval negative means no blanking value. Filled Histogram
    is created by the options /FILL + /BASE.