401
edits
Changes
added RELAX NG
* If a subset of HTML is selected as a choice for the markup language, parsing and rendering engines of Web browsers can be re-used.
* XML based markup of text codecs however often renders the text specification unreadable. Examples: [http://wiki.xiph.org/index.php/OggKate#Overview_of_the_Kate_bitstream_format Kate] chose a C-like tree that was easy to parse with lex & yacc; [http://www.w3.org/DesignIssues/Notation3 RDF has a N3 notation ] [http://www.w3.org/TR/rdf-syntax-grammar/#section-RELAXNG-Schema or a RELAX NG notation] as a RDF-XML alternative]; [http://en.wikipedia.org/wiki/Subrip srt] and other simple subtitle/caption formats avoid XML]
* When encapsulating text codecs into a binary audio/video file such as Ogg, where compression is everything that counts, a "talkative" XML codec may not be the best choice.
