format  Bool STM_SetExecGrp (StmGrpHn grp)
 Input  grp: Stream group handle
 Output  None
 Function value  TRUE: When processing is accepted
  FALSE: If processing has not been completed
 Function  Specify the stream group to be executed by the stream server. Since it is a complete return,
 This function will not end until the process  is completed.
 Remarks  (a) Wait until the drive is paused in this function.
:  (b) If NULL is specified, the stream server will be STM_EXEC_PAUSE.
:  (c) When using the file system, specify NULL to stop.
  (d) When resuming access to the stream group, read from the stop position.
.  

  format  Sint32 STM_ExecServer (void)
 Input  None
 Output  None
 Function value  Stream access status (StmAcStat)
:  Function ID (StmFuncId) when an immediate return function is being executed
 Error  Error code (StmErrCode)
 Function  Runs the stream server.
 Remarks  Call this function at least once per second. 

  format  voidSTM_MovePickup (StmHn stm, Sint32 ofs)
 Input  stm: Stream handle
:  ofs: Offset from the beginning of the stream (in sectors)
 Output  None
 Function value  None
 Function  Sets the playback position of the stream group to which the stream belongs.
 Remarks  (a) Destination FAD = Stream start FAD + Offset.
 Pickup  (b) The pickup position is moved by executing STM_ExecServer.
.