"The" reference is, of course, inside the ESTK Editor itself (it's under Help, Object Model Viewer). However, its "comprehensiveness" has been subject of some debate. My version of the very same information has a few points in favor (more-mroe-more internal hyperlinks, graphic hierarchy, Elements Of, Returns, and Used In lists, and -- in the recommended CHM version -- full indexed as well as free-text-searchable).
I have found a useful site (http://www.indesignscriptingreference.com), but it is only updated to CS3.
Yeah, that's when I started complaining because that low-life blatantly put a copy of my hard work onto his site, wrapped it into adverts-heavy HTML, did not mention me anywhere, and still dares to call himself an "XML, XSLT, HTML and InDesign Scripting Expert".
I copied the CSS in my CHM version from his site and double-dared him to copy the rst of my stuff onto his site. He never replied.
Thanks to you both. I promise to use only the Jongware site from now on!