Labels: Type-Enhancement Priority-Medium Component-Core
New issue 80 by byor...@gmail.com: "Grouping" for transparent things
cairo and SVG both support a notion of "grouping" so that grouped things
will have their transparency set as a group -- i.e. as if everything were
drawn first and then the resulting bitmap made transparent. It would be
nice if diagrams supported this as well, though it's not entirely obvious
how this should work. At a minimum we need to work out how to expose more
tree structure to backends first.