Man pages matching name delcr in section 1:

delcr.1.en	debian 10 / ucspi-tcp
delcr.1.en	debian 10 / ucspi-tcp-ipv6
delcr.1.en	debian 11 / ucspi-tcp
delcr.1.en	debian 11 / ucspi-tcp-ipv6
delcr.1.en	debian 12 / ucspi-tcp
delcr.1.en	debian 12 / ucspi-tcp-ipv6