15.64.31.15 CURRENT|NEXT|PREVIOUS|FIRST|LAST

- Selects the current, next, previous, first or last histogram. This may be modified by ID=n, NAME='hist_name', MESH... to select the next histogram with the desired ID, NAME, or type. When NEXT, PREVIOUS, FIRST or LAST are specified, no error messages are issued for duplicate histograms selected one.