The following sources are used for the compatibility tables on SVG elements and attributes:
- https://developer.mozilla.org/En/SVG_in_Firefox together with its revision history for Firefox
- http://www.webkit.org/projects/svg/status.xml together with its recorded archive for WebKit, Safari and Chrome
- http://www.opera.com/docs/specs/opera9/svg/ and accompanying pages for Opera >= 9, http://www.opera.com/docs/specs/opera8/ for Opera 8
- http://blogs.msdn.com/b/ie/archive/2010/03/18/svg-in-ie9-roadmap.aspx for hints on IE9 support status
- The SVG support charts at Codedread.com for basic checks against the W3C test suite
- Wikipedia for basic hints, not normative