15.47  MONITOR 

     MONITOR HISTOGRAMS [AVAILABLE|FILE=name|SECTION=name]
          [IDENT[=[FROM] n1 [TO] [n2]]
          [EXACT[=ON|OFF]] [EXPAND[=ON|OFF]] [SELECT|NAME='hist_name']
          [INTERVAL=n] [ENTRIES[=ON|OFF]] [HISTOGRAM[=ON|OFF]] [LOG[=ON|
          OFF]] [MESH[=ON|OFF]] [OVERFLOWS[=ON|OFF]] [PAUSE[=ON|OFF]]
          [REPEAT=n] [RESCALE[=ON|OFF]] [SHOW[=ON|OFF]] [SCAN[=ON|OFF]]
          [SKIP=n] [STATISTICS[=ON|OFF]] [TIME[=ON|OFF]] [TREE[=ON|OFF]]
          [WINDOWS=n]
Repeatedly displays the selected histograms, or the last one selected by a
SET HISTOGRAM command.  If more than 1 histogram are selected only the
first 20 are displayed.  SEE:TOPDRAWER LINK and SET MONITOR