Man pages matching name addcr in section 1:

addcr.1.en	debian 10 / courier-mta
addcr.1.en	debian 10 / ucspi-tcp
addcr.1.en	debian 10 / ucspi-tcp-ipv6
addcr.1.en	debian 11 / courier-mta
addcr.1.en	debian 11 / ucspi-tcp
addcr.1.en	debian 11 / ucspi-tcp-ipv6
addcr.1.en	debian 12 / courier-mta
addcr.1.en	debian 12 / ucspi-tcp
addcr.1.en	debian 12 / ucspi-tcp-ipv6