/usr/share/doc/libjcode-perl/README.Debian is in libjcode-perl 2.13-4.
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The actual contents of the file can be viewed below.
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jcode.pl: Perl library for Japanese character code conversion
Atsushi KAMOSHIDA <kamop@debian.or.jp>, Thu, 15 Oct 1998 09:21:48 +0900
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