Inkscape's default SVG
Inkscape is good with SVG, but it's default format has a lot of cruft.
This is just a test that comparing what is in the default Inkscape SVG, versus what is necessary for it to render (in a second example) .
This document is 2125 characters. You'll see the extensive use of inkscape and sodipodi variables throughout the document.
An optimized version of 760 characters is here.