Requesting BPs for canvas api.

Hello,

In redrafting MWABP (and in the light of focussing on our various capability
flags) it suddenly occurred to me we have no mention of or best-practices
for the use of Canvas element in HTML5. Anybody have experience of using
this and able to share knowledge that could evolve into BPs... I will have a
play with canvas and get a feel for it, but I have never actually used it in
anger so would prefer to hear some real experiences of usage.

Thanks,

Adam.