Parameters

  Keyword   Position  Type      Description
  -------   --------  ----      -----------
   SWITCH      1      CHAR      Control parameter
   INP         2      CHAR      Dataset where appropriate
   NDF         3      CHAR      NDF numbers for multiple dataset
   CANCEL      -      LOG       Cancel selected quantities
   OFF         -      LOG       Same as cancel
   SHOW        -      LOG       Show selected quantities
  Other parameters are listed with the SWITCH modes to which
  they apply.