CALL: PLOT_HISTOGRAM
The histogram is referenced via a global variable that has usually
been returned by a call to BOOK_HISTOGRAM.
This should either be a string with the title that you want to
appear at the top of the plot, or a string containing just an
asterisk (`*`) in which case the name of the global variable
associated with the histogram appears as title.
By default, a frame is opened for the histogram to be plotted.
If frame is set to False however, the histogram is plotted on
top whatever is already on the screen.
[Default: True.]
By default, the frame is closed after the histogram has been
plotted. If close is to to False however, the frame is left
open for adding further elements.
[Default: True.]
Keyword index.
Formatted on 10/11/98.