A year or so ago I read through one smallish section (basically function calls) and filed issues for the problems I found that were easy to write up crisply.

They fixed the easy bugs:

https://github.com/ferrocene/specification/issues/453 https://github.com/ferrocene/specification/issues/454 https://github.com/ferrocene/specification/issues/455 https://github.com/ferrocene/specification/issues/458 https://github.com/ferrocene/specification/issues/459 https://github.com/ferrocene/specification/issues/460 https://github.com/ferrocene/specification/issues/461 https://github.com/ferrocene/specification/issues/463 https://github.com/ferrocene/specification/issues/464

But they didn't try to fill the gaps:

https://github.com/ferrocene/specification/issues/462 https://github.com/ferrocene/specification/issues/465 https://github.com/ferrocene/specification/issues/466

There were a lot more places where I had notes saying "it needs to say more about X" that I couldn't face trying to file issues for.

I think that part of the spec wasn't any worse than average.