The Pogo.jp.pod lacks an '=encoding' line at the top of the file.
So most POD renderers are not able to render it corectly. See for
example: http://api.metacpan.org/source/SEYN/Pogo-0.10/Pogo.jp.pod
See reference documentation in perlpod:
http://perldoc.perl.org/perlpod.html#=encoding-_encodingname_
--
Olivier Mengué - http://perlresume.org/DOLMEN