Man pages matching name warnx in section 3:

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