2018 2020 align areas array attribute autocad autocad 2018 autolisp bim block blocks cad civil 3d civil 3d 2018 count dimension dynamic block excel families family fields flip floor formula furniture graphics hatch levels linetype line weight link linked files linked models lisp list mep navisworks ole pdf phases plot polyline profile profiles project management properties publish revision revit revit 2018 revit 2019 rotation scale schedule slow standards stretch surface sweep tags text vba viewport viewports visibility volume watermark windows xref