Talk:XHTML Mobile Profile
From Nokia Developer Wiki
This article discusses the XHTML Mobile Profile. XHTML mobile profile is a subset of standard XHTML, and is designed to render on small screen devices. The article highlights several differences and similarities between standard XHTML and XHTML mobile. One of the major differences is that tables in the mobile profile cannot be nested and do not have borders.
The article is at a very introductory level.
For a more detailed discussion of XHTML mobile see: XHTML Mobile