Man pages matching name vwarn in section 3:

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