fexofftx version 21091300
Generate an XOFF or XON (toggles between them) on a to-frontend link, in FULL-mode firmware.
Usage: fexofftx [-h|V] [-d <devnr>] -G <lnk>
  -h         : Show this help text.
  -V         : Show version.
  -d <devnr> : FLX-device to use (default: 0).
  -G <lnk>   : Link number.
