It's still a good example where the specification is in flux and a lot of documentation virtually non-existent (e.g. std), but that is still very usable, simply

It's still a good example where the specification is in flux and a lot of documentation virtually non-existent (e.g. std), but that is still very usable, simply due to the fact that it isn't a very complex language in terms of semantics, which in turn makes it less dependent on a very precise spec.