fact: Definition make_hor_comp {C : category} {D : twosided_disp_cat C C} (Cm : hor_comp_data D) (HC : hor_comp_laws Cm) : hor_comp D := Cm ,, HC.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos