SUI_GetStatus returns a 1 if the user has spoken a valid utterance. On Windows, 2 is returned if the end of the audio file has been reached (if listening to an audio file).

This command is typically called in a loop in a separate process:

Repeat `Loop until we hear from the user.
  DELAY PROCESS (Current process ;6)
Until ((SUI_GetStatus=1) | (SUI_bAbort))