Man pages matching name unlockpt in section 3:

unlockpt.3.en	debian 10 / manpages-dev
unlockpt.3.es	debian 10 / manpages-es
unlockpt.3.ja	debian 10 / manpages-ja-dev
unlockpt.3.en	debian 11 / manpages-dev
unlockpt.3.es	debian 11 / manpages-es-dev
unlockpt.3.fr	debian 11 / manpages-fr-dev
unlockpt.3.ja	debian 11 / manpages-ja-dev
unlockpt.3.en	debian 12 / manpages-dev
unlockpt.3.es	debian 12 / manpages-es-dev
unlockpt.3.fr	debian 12 / manpages-fr-dev
unlockpt.3.ja	debian 12 / manpages-ja-dev