ITS 2.0 Validation Techniques

ITS 2.0 (Internationalization Tag Set) is a new W3C Recommendation, which defines a set of universal elements
and attributes that can be used in host vocabularies like HTML or XML to improve localization and translation
processing. The fact that ITS markup can be combined with almost any other markup makes validation of ITS
content more challenging than usual. This paper discusses various approaches to validation of ITS markup both in
XML and HTML documents. Advantages and disadvantages of various approaches are discussed. Special attention
is given also to validation of HTML5 content.