ACTION-420: Differences between XHTML 1.1 Basic and regular XHTML

I picked up an action at the f2f to summarize what was ³different² about
XHTML Basic 1.1[1], in particular with regard to support for namespaces.

In the interest of putting that to bed:

XHTML Basic was built as a set of XHTML modules, using XHTML
Modularization[2].  As such, it's a subset of modules defined in [2] with
the addition of the inputmode attribute[3].  The rationale for developing a
named subset of XHTML modules was to support user agents running on less
capable devices.

Hope that clears things up,

Dan

1. http://www.w3.org/TR/xhtml-basic/
2. http://www.w3.org/TR/xhtml-modularization/
3. http://www.w3.org/TR/xhtml-basic/#s_inputmode