I am trying to find that part of the sourcecode of Inkscape which translates the changes/EDITS made by designer and actually manipulate the original SVG file(the xml type file). I have a few questions

Here is the architectural overview of Inkscape source:
http://wiki.inkscape.org/wiki/index.php ... l_overview

Here is the documentation
http://fossies.org/dox/inkscape-0.48.4/index.html

Here is the bazaar repository of inkscape 0.48
http://bazaar.launchpad.net/~inkscape.d ... ANCH/files


1)Which file/directory has the code which reads the SVG and makes a XML tree out of it?Also
the part where the reverse happens i.e. a final SVG is made out of the changed XML?
2)Where is the parallel object tree made?
3)Does sp-ellipse.cpp does everything from manipulating the object tree to propagating them to
the XML tree?
4)Where is the function updateRepr() and what does it do?

Thanks,
Gurpreet