1 NORMALIZE
  Syntax: NORMALIZE id1 [:id1n] [&idb1] id2 [:id2n] [&idb2]
          [normalization]                    (default normalization = 1.0)
      or  HIST id3 [&idb3]
   where: id1  is the input histogram identifiers
          id2  is the output histogram identifier
          idb1 is the (optional) input secondary identifier
     and  idb2 is the (optional) output secondary identifier

  Normalizes  a  histogram  (`id1') to  the given  area or to  the area of
  another histogram. To specify the  secondary identifier, precede it by a
  `&', otherwise the  default will be used. (Use  the `SET IDB' command to
  change the default). The scale  factors are optional. To avoid confusion
  you should give a  `<CR>' after the  identifiers or  make sure the scale
  factors are given as real numbers.

  To normalize a range of histograms, the primary identifiers you give for
  the input and  output histograms  must be the same,  but you can specify
  different secondary identifiers.  For example,
  `NORM 300:400&1 300 : 400 & 10  10.0' will normalize all histograms with
  primary identifiers 300  to 400 and secondary  identifiers 1, to an area
  of 10,  putting  the  results  into  histograms  with  the same  primary
  identifiers and secondary  identifier 10. If you give primary identifier
  0, the operation will be performed on all plots with the given secondary
  identifier.

