[cairo] Latest diagram - svgz file 51K

[Donn]

Baz,
 Some feedback and some questions:
> - "your path accrues on the mask layer". Not really. 
In previous posts I have mentioned this as my working metaphor and I have seen 
nothing, yet, to disabuse me of the idea - paths really *seem* to be placed 
on the "Mask" ( a nebulous internal thing that has no Object or reference on 
the user side of the API). 

> - I don't think save(), restore() belong in the box with
> transform/rotate/scale. They also save and restore the font, the clip
> path, the stroke properties, etc. This box makes it look like they
> don't affect those properties.
This one interested me. My own major use of save/restore has been to build 
nested transforms for animation. I'm actually sitting here trying to figure 
out what use there would be for save/restore in terms of font, paths etc.
 I am tired, so my imagination is on the fritz. It seems that there's some use 
for a kind of redo/undo thing, or maybe re-drawing old stuff in new places, 
but that's better covered by push_group et al.
 Can you give me an example?

/d