universe variables u
variables (A : Type u) [H : inhabited A] (x : A)
include H

definition foo := x
#check foo  -- A and x are explicit

variables {A x}
definition foo' := x
#check @foo' -- A is explicit, x is implicit

open nat

#check foo nat 10

definition test : foo' = (10:nat) := rfl

set_option pp.implicit true
#print test
