Functors and functions both called `f` can be confusing

In https://github.com/fantasyland/fantasy-land#map-method the letter f denotes a functor:

map :: Functor f => f a ~> (a -> b) -> f b

But in the next line the same f is a function:

u.map(x => f(g(x)))

Would it be less confusing to use different letters perhaps?

[gabejohnson]

This looks like a duplicate of #217 to me.

[i-am-tom]

It bears repeating that these identifiers don’t have to be single letters; would it be easier if the definition were simply map :: Functor flType => flType a -> (a -> b) -> flType b?