Hey Claude,
Thanks for making this slick well composed tutorial.
I have a few comments.
in Gem is to use the [repeat] obejct (...) Let's try using (...)".
But in the patch it is not used. Instead you present the recursive
method, as would hope from the great bottom up composition. Replacing
the first paragraph whit something like "Now we draw the spiral
without repeat, but using a/the recursive method". That would work
with the conclusion too. I think.
that the binary tree example would be a special case of the n-ary
example. Maybe i'm missing something.