[Haskell-cafe] Location of library documentation with 6.12.1?

[Roly Perera]

Hi,

I've just upgraded from 6.10.1 to 6.12.1 and can't seem to find all
the library documentation. This page is apparently the documentation
root:

http://www.haskell.org/ghc/docs/6.12.1/html/

but if I click through to the Haskell Hierarchical Libraries page

http://www.haskell.org/ghc/docs/6.12.1/html/libraries/index.html

I can't for example find Control.Monad.State. I guess I'm missing
something obvious about how things are organised?

thanks in advance,
Roly