section
  universe l
  definition A {n : ℕ} (t : Sort l) := t
  #check A
  #check _root_.A.{1}
  set_option pp.universes true
  #check A
  #check _root_.A.{1}
end

section
  universe l
  parameters {B : Sort l}
  definition P {n : ℕ} (b : B) := b
  #check P
  #check @_root_.P.{1} nat
  set_option pp.universes true
  #check P
  #check _root_.P.{1}
  set_option pp.implicit true
  #check @P 2
  #check @_root_.P.{1} nat
end