fact: Definition make_hor_id {C : category} (D : twosided_disp_cat C C) (I : hor_id_data D) (HI : hor_id_laws I) : hor_id D := I ,, HI.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos