[Pharo-dev] Newbie(ish) Question on SVG with Athens / Roassal / Spec

Hi I am contemplating moving an old Pharo app (1.4 vintage) which used Morphic heavily into the new Pharo world (Pharo 5). One of the options is to move a proprietary vector graphic implementation which draws symbols to SVG. Looking for examples / documentation on the use of SVG (external files, not image defined paths) has been very frustrating. All examples I have found have been old and none of the file based / load ones work. Can anyone please point me to good documentation / examples? I want to understand how one can use: SVG with Athens SVG with Spec SVG loaded from a file with Roassal Thanks in advance. Graham