A common question is what areas of Foundation need implementing still in s-c-f, which can be quite opaque; often, implementation was a reaction to need reports rather than a systematic effort. This document is in a format that allows interested parties to find remaining symbols and whether they are expected or not; any method that is not tagged as unsupported is an area where we welcome contributions.
Right, I just wondered if there was a better way of reading the file than manually searching through a 10,000+ line file. Otherwise it's a great resource, though I hope it can be generated automatically.
I'm definitely using TaskPaper on my machine to filter it, but any text editor that can filter away lines or sections containing @done will show the remaining surface.