NAME
	CMD_STOP  - Stops the device.


   SYNOPSIS
	Standard device command.


   FUNCTION
	CMD_STOP halts the currently active speech (if any) and	prevents
	any queued requests from starting.


   INPUTS
	Valid IORequest block with the io_Command field set to CMD_STOP.
	A valid IORequest block is one with its io_Message structure, and
	io_Device and io_Unit fields properly initialized.  The easiest
	way to insure proper initialization is to make a copy of the
	IORequest block after a successful OpenDevice call.


   RESULTS
	io_Error set to 0.


   SEE ALSO
	Exec input/output documentation.