Overlay illustration

Chaps,

I have knocked up a very quick illustration (attached) to help me
discuss the idea of overlays during today's meeting.  Please try to have
access to this during the meeting.

RI

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Richard Ishida
W3C

tel: +44 1753 480 292
http://www.w3.org/International/
http://www.w3.org/People/Ishida/