The following lines were added (+) and removed (-):
=== fly rafters ===The end rafters forming the outside edge of the roof overhang.== G ===== girder ===Large beam of wood or steel which acts as the principle support for loads along its span.== H ===== header ===Beam which is perpendicular to wall suds above doors, windows or other openings. It carries the weight of structural loads.== J ===== joist ===Parallel framing members installed horizontally to carry floor and ceiling loads