Man pages matching name gr-ctrlport-monitor in section 1:

gr-ctrlport-monitor.1.en	debian 10 / gnuradio
gr-ctrlport-monitor.1.en	debian 11 / gnuradio
gr-ctrlport-monitor.1.en	debian 12 / gnuradio
gr-ctrlport-monitor.1.en	debian 13 / gnuradio