Whenever I (contributor @bigeasy) return to work on this project, I find that I need to reorient myself with the reference materials. A search of Google turns up a lot dubious results. These are resources I eventually return to.

• W3C DOM — The W3C DOM specifications.
• Document Object Model (DOM) Conformance Test Suites — Conformance tests used to validate the DOM.
• SAX Conformance Testing — Conformance tests for SAX created by Elliotte Rusty Harold.
• Extensible Markup Language (XML) Conformance Test Suites — Conformance tests for XML.

When you do search Google add MDN to the search to get results from the Mozilla wiki. Mozilla wiki pages will often reference the relevant specifications.

See How to outside node.js for some information about this.