How to view clojure docs in Emacs Cider

Developing clojure with Emacs Cider is great. To be able to view summaries for clojure functions and special forms, type this in you Cider REPL:

(use 'clojure.repl)

Afterwards, you can do stuff like this:

my.repl> (doc conj)
-------------------------
clojure.core/conj
([coll x] [coll x & xs])
conj[oin]. Returns a new collection with the xs
'added'. (conj nil item) returns (item). The 'addition' may
happen at different 'places' depending on the concrete type.
nil

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