- UNIVERSAL – base class for ALL classes (blessed references)
 - 
		Unicode::Collate – Unicode Collation Algorithm
		
Unicode::Collate::CJK::Big5 Unicode::Collate::CJK::GB2312 Unicode::Collate::CJK::JISX0208 Unicode::Collate::CJK::Korean Unicode::Collate::CJK::Pinyin Unicode::Collate::CJK::Stroke Unicode::Collate::CJK::Zhuyin Unicode::Collate::Locale - Unicode::Normalize – Unicode Normalization Forms
 - Unicode::UCD – Unicode character database
 - User::grent – by-name interface to Perl's built-in getgr*() functions
 - User::pwent – by-name interface to Perl's built-in getpw*() functions