Man pages matching name pbm in section 5:

pbm.5.pl	debian 10 / manpages-pl
pbm.5.en	debian 10 / netpbm
pbm.5.pl	debian 11 / manpages-pl
pbm.5.en	debian 11 / netpbm
pbm.5.en	debian 12 / netpbm
pbm.5.de	debian 13 / manpages-de
pbm.5.pl	debian 13 / manpages-pl
pbm.5.ro	debian 13 / manpages-ro
pbm.5.en	debian 13 / netpbm