I've just published draft #3 of SRFI 203. It was submitted by Vladimir Nikishkin, author of the SRFI.
Here are Vladimir's comments on the draft:
Could people have a look at the [new draft] once again?
I have added two quite large pieces of text to explain why (canvas-refresh) and (canvas-reset) are needed. I am still not sure that the wording is good enough.
Here is the commit summary:
Here's the diff: