abf a'b'f' g h p : morphism abf a'b'f' := @' abf a'b'f' g h p p^.
Require Import HoTT.Basics HoTT.Types. Require Import Functor.Core. Require Import InitialTerminalCategory.Core InitialTerminalCategory.Functors. Require Import Category.Strict. Import Functor.Identity.FunctorIdentityNotations. Module Import CommaCategory.