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.