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.