Description:

HTML::Entities::Numbered is a content conversion filter for named HTML
entities (symbols, mathmetical symbols, Greek letters, Latin letters,
etc.). When an argument of name2decimal() or name2hex() contains some
nameable HTML entities, they will be replaced to numbered HTML entities.
And when an argument of name2decimal_xml() or name2hex_xml() contains
some nameable numbered HTML entities, they will be replaced to numbered
HTML entities except valid XML entities (the excepted "valid XML
entities" are the following five entities: <, >, &, ",
'). By the same token, when an argument of decimal2name() or
hex2name() contains some nameable numbered HTML entities, they will be
replaced to named HTML entities.