Allow stairs and ramps to join with floors and walls, so elements read correct in views without having to manually hide lines.
When modelling stairs you want to model the element as it would be typically constructed i.e. with a stair tread continuing up to the floor surface. The result of this however is that when viewed in plan the stair looks like it has an additional riser where it meet the floor. With out elements typically this would be removed by joining the elements, however with stairs and ramps this is not possible to join.