Man pages matching name mousex::configfromfile in section 3pm:

MouseX::ConfigFromFile.3pm.en	debian 10 / libmousex-configfromfile-perl
MouseX::ConfigFromFile.3pm.en	debian 11 / libmousex-configfromfile-perl
MouseX::ConfigFromFile.3pm.en	debian 12 / libmousex-configfromfile-perl