[CM] S7 & graphics with ImGui

[bil at ccrma.Stanford.EDU]

Wow!  I had trouble at first following what you were
doing, but by the end everything was making sense.
I had heard about ImGui, but had never looked at it
closely -- it is very interesting.  And the cmuscheme
connection to s7 in emacs caught me by surprise --
is that what you were using?  And org mode perhaps?
So much to learn...

A very impressive video!