Reading through this list of comments, I agree with all of the users above coming form vectorworks and sketchup p- both of which I am proficient with where in place editing of components / symbols / blocks / objects (or what ever you want to can a repeating element is very well implimented an enables a smooth logical work flow whilst remaining in the same project file . In vectorworks you create a symbol (block in autocad) and to endit in place you hit apple - open bracket to exit out of edit mode you ht apple - closed brackets - SIMPLES. The gold standard is sketchup and the way it deals with editing componentes. Double click all other instances are greyed out, make changes, exit out of the component editing mode - done. PLEASE PLEASE PLEASE just look at sketchup component editing and copy this. This is a daily workflow that all cad users expect - this really needs to be pushed up to the top of the list ! - learn from the best, which in this case is sketchup. Otherwise Archicad is ticking many boxes. Thanks!