W3C defines a number of specifications to allow different markup languages to be syntactically combined, such as:
There are also a number of combined markups already in use, such as
and there are (many) more on the way, thanks to the work of the CDF WG.
But if you are going to combine markups together, you really want them to work together harmoniously.
Such examples are:
etc etc
This session introduces a number of pieces of work going on at W3C to increase architectural integrity.
I would have liked to have also included RDFa ("bridging the semantic and clickable webs") in the session, but there is a session that includes it tomorrow
Several working groups are getting together to coordinate the architectural aspects of their markups. An initial meeting at the end of last year produced some good results.
Focussing on a part of the backplane, and demonstrating combining markups to create compound components
A browser that supports it all.