Like many Flash developers, I was frustrated at trying to see the contents of complex ActionScript objects and being left with the irritatingly vague “[Object object]”
So it should come as no surprise that I was ecstatic at the discovery of the ObjectDumper. It’s a hidden, undocumented tool in Flash for tracing (or otherwise outputting) all the contents of an object, in a friendly, bracketed format. Macromedia’s Jen DeHaan explains it in detail.
This tool has proved invaluable to me, and I highly recommend it.