tie( 
  %NCAR::COMMON::DSTDDT, 
  'NCAR::COMMON',
  -id      => 105,
  -name    => 'DSTDDT',
  -vars    => {'ITWK' => ['8','i',1,[]],'RTRI' => [0,'f',1,[]],'RTWK' => ['4','f',1,[]]},
);