format  StmHn STM_OpenFid (StmGrpHn grp, Sint32 fid, StmKey * key,
 (Sint32 lpread) 
 Input  grp: Stream group handle
:  fid: File identifier
  key: Stream key
  lpread: Re-read specification during loop playback (StmLoopRead)
 Output  None
 function value  stream handle (NULL in case of error)
 Function  Opens a stream with a file identifier and assigns it to the specified stream group
 Register .
 Remarks  The stream key file number is not used. 

  format  StmHn STM_OpenFrange (StmGrpHn grp, StmFrange * frange,
  (StmKey * key, Sint32 lpread)
 Input  grp: Stream group handle
  frange: Playback range
:  key: Stream key
  lpread: Re-read specification during loop playback (StmLoopRead)
 Output  None
 function value  stream handle (NULL in case of error)
 Function  Opens a stream according to the playback range and registers it in the stream group. 

  format  StmHn STM_OpenResi (StmGrpHn grp, Sint32 fid, StmKey * key, Sint32 fad)
 Input  grp: Stream handle
.  fid: File identifier
  key: Stream key
:  fad: Transfer start FAD
 Output  None
 function value  stream handle (NULL in case of error)
 Function  Opens a resident stream.
 Remarks  Files on SIMM and SCSI can only be used as resident streams.