## Summary When using hoogle to search for functions with simple, arithmetic types, the user is presented with a lot of completely undocumented functions from base/GHC.X libraries. Steps to reproduce the issue: On https://hoogle.haskell.org search for `Int -> Int -> Int` or `Integer -> Integer -> Integer` The functions like `divInt`, `clamp`, `badSafeIndex`, `plusInteger` etc. which show up in the search results are mostly from base or GHC.X libraries, and are completely undocumented. I discovered this problem when presenting Hoogle to a newcomer, who will probably try out Hoogle with simple types first. So it might be better to give them a good first impression in that case :) ## Proposed improvements or changes Add documentation strings. Since a lot of these functions are not meant to be used directly, but rather through the `Num`, `Fractional` etc. instances, the documentation in the corresponding modules could maybe also spell this out.