Man pages matching name zdiff in section 1:

zdiff.1.en	debian 10 / gzip
zdiff.1.de	debian 10 / manpages-de
zdiff.1.es	debian 10 / manpages-es-extra
zdiff.1.hu	debian 10 / manpages-hu
zdiff.1.ja	debian 10 / manpages-ja
zdiff.1.pl	debian 10 / manpages-pl
zdiff.1.en	debian 10 / zutils
zdiff.1.en	debian 11 / gzip
zdiff.1.de	debian 11 / manpages-de
zdiff.1.es	debian 11 / manpages-es
zdiff.1.hu	debian 11 / manpages-hu
zdiff.1.ja	debian 11 / manpages-ja
zdiff.1.pl	debian 11 / manpages-pl
zdiff.1.en	debian 11 / zutils
zdiff.1.en	debian 12 / gzip
zdiff.1.da	debian 12 / manpages-da
zdiff.1.de	debian 12 / manpages-de
zdiff.1.es	debian 12 / manpages-es
zdiff.1.fi	debian 12 / manpages-fi
zdiff.1.hu	debian 12 / manpages-hu
zdiff.1.ja	debian 12 / manpages-ja
zdiff.1.pl	debian 12 / manpages-pl
zdiff.1.tr	debian 12 / manpages-tr
zdiff.1.en	debian 12 / zutils