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diff --git a/ext/Encode/CN/CN.pm b/ext/Encode/CN/CN.pm
index 2aca19b..be5a830 100644
--- a/ext/Encode/CN/CN.pm
+++ b/ext/Encode/CN/CN.pm
@@ -1,8 +1,76 @@
 package Encode::CN;
+BEGIN {
+    if (ord("A") == 193) {
+	die "Encode::CN not supported on EBCDIC\n";
+    }
+}
+our $VERSION = do { my @r = (q$Revision: 2.0 $ =~ /\d+/g); sprintf "%d."."%02d" x $#r, @r };
+
 use Encode;
-our $VERSION = '0.02';
 use XSLoader;
-XSLoader::load('Encode::CN',$VERSION);
+XSLoader::load(__PACKAGE__,$VERSION);
+
+# Relocated from Encode.pm
+
+use Encode::CN::HZ;
+# use Encode::CN::2022_CN;
 
 1;
 __END__
+
+=head1 NAME
+
+Encode::CN - China-based Chinese Encodings
+
+=head1 SYNOPSIS
+
+    use Encode qw/encode decode/; 
+    $euc_cn = encode("euc-cn", $utf8);   # loads Encode::CN implicitly
+    $utf8   = decode("euc-cn", $euc_cn); # ditto
+
+=head1 DESCRIPTION
+
+This module implements China-based Chinese charset encodings.
+Encodings supported are as follows.
+
+  Canonical   Alias		Description
+  --------------------------------------------------------------------
+  euc-cn      /\beuc.*cn$/i	EUC (Extended Unix Character)
+	      /\bcn.*euc$/i
+              /\bGB[-_ ]?2312(?:\D.*$|$)/i (see below)
+  gb2312-raw			The raw (low-bit) GB2312 character map
+  gb12345-raw			Traditional chinese counterpart to 
+				GB2312 (raw)
+  iso-ir-165			GB2312 + GB6345 + GB8565 + additions
+  MacChineseSimp                GB2312 + Apple Additions
+  cp936				Code Page 936, also known as GBK 
+				(Extended GuoBiao)
+  hz				7-bit escaped GB2312 encoding
+  --------------------------------------------------------------------
+
+To find how to use this module in detail, see L<Encode>.
+
+=head1 NOTES
+
+Due to size concerns, C<GB 18030> (an extension to C<GBK>) is distributed
+separately on CPAN, under the name L<Encode::HanExtra>. That module
+also contains extra Taiwan-based encodings.
+
+=head1 BUGS
+
+When you see C<charset=gb2312> on mails and web pages, they really
+mean C<euc-cn> encodings.  To fix that, C<gb2312> is aliased to C<euc-cn>.
+Use C<gb2312-raw> when you really mean it.
+
+The ASCII region (0x00-0x7f) is preserved for all encodings, even though
+this conflicts with mappings by the Unicode Consortium.  See
+
+L<http://www.debian.or.jp/~kubota/unicode-symbols.html.en>
+
+to find out why it is implemented that way.
+
+=head1 SEE ALSO
+
+L<Encode>
+
+=cut