NAME
        CMD_START - Restarts the device after a cmd_stop command


   SYNOPSIS
        Standard device command.


   FUNCTION
        CMD_START restarts the currently active speech (if any) and
        allows queued requests to start.


   INPUTS
        Valid iorequest block with the io_command field set to cmd_start
        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.