Although the SVG generation was customizable in version 2.2, for version 2.3 it is even more so. You can now easily let your end-users select objects (either by clicking or by rubber-banding), pan, or zoom. You can add your own “forms”, implemented in SVG, that display custom information that you define.
It wasn’t clear to me how to embed SVG in these forum posts, so I created a separate sample page: http://www.nwoods.com/forum/uploads/samplesvg.html