The Report Group Description entry specifies the characteristics of a
  report group and of the individual items within a report group.

  Format 3 -

   level-number [ group-data-name ]

      [ BLANK WHEN ZERO ]

      [ COLUMN NUMBER IS column-num ]

      [ GROUP INDICATE ]

      [ { JUSTIFIED } RIGHT ]
      [ { JUST      }       ]

      [ LINE NUMBER IS { line-num [ ON NEXT PAGE ] } ]
      [                { PLUS line-num-plus        } ]

       { PICTURE } IS character-string
       { PIC     }

      [ [ SIGN IS ] { LEADING  } SEPARATE CHARACTER ]
      [             { TRAILING }                    ]

      { SOURCE IS source-name                                           }
      { VALUE IS lit                                                    }
      { {SUM {sum-name} ... [UPON {detail-report-group-name} ... ]} ... }
      {     [ RESET ON { control-foot-name } ]                          }
      {     [          { FINAL             } ]                          }

      [ [ USAGE IS ] DISPLAY ] .