Format

      structure-name  STRUCTURE

                      [ DESCRIPTION  IS /*text*/ ]  [record-property] ...

                      [             {BIT       }          ]
                      [             {BYTE      }          ]
                      [             {WORD      }          ]
                      [ ALIGNED  ON {          } BOUNDARY ] .
                      [             {LONGWORD  }          ]
                      [             {QUADWORD  }          ]
                      [             {OCTAWORD  }          ]
                      [             {          }          ]

                      [ included-name-clause  ]
                      [ local-field-clause    ]
                      [ structure-name-clause ] ...
                      [                       ]
                      [ variants-clause       ]

                      END [ structure-name ]  STRUCTURE .