I've tried to get these two corners to connect but i cant seem to get it. I've even given up and tried to just put windows but the curtain wall seems like its the way to go if i can ever get it to work. I've slanted the two curtains now i just need to trim that extra off. if you would please help me out brand new to archicad. I've tried to go into edit and erase them and it doesn't erase