On Tue, Sep 15, 2020 at 6:54 PM Vladimir Nikishkin <xxxxxx@gmail.com> wrote:
These are great suggestions. I have updated the file to reflect them
as much as I managed to.

I have moved the discussion of the canvas and the possible graphical
systems into the "specification" section and updated the
(canvas-refresh) explanation to reflect the changes suggested. 

Normally, I wouldn't declare this a separate draft, especially since I published an earlier draft for this SRFI today, but for some reason I decided to this time, as draft #4.  It's probably because I have a soft spot for SICP.

In any case, everyone should feel free to look at the current draft, which incorporates Vladimir's latest pull request.