!!XML

* SXML: http://okmij.org/ftp/Scheme/SXML.html
** This page specifies revision 3.0 of SXML. SXML is an abstract syntax tree of an XML document. SXML is also a concrete representation of the XML Infoset in the form of S-expressions. The generic tree structure of SXML lends itself to a compact library of combinators for querying and transforming SXML. 
!!YAML
*http://ja.wikipedia.org/wiki/YAML

!!JSON
*http://ja.wikipedia.org/wiki/JSON