http://www.raworkshop.com This movie presents how to join windows and doors in Ra Workshop in order to create complex structures. For multiple select press Ctrl key on the keyboard. Ra Workshop is the best software for windows and doors industry - from resellers and dealers, to manufacturers and suppliers. Ra Workshop can use aluminum, vinyl (PVC) or wood profiles and is able to compute a great variety of products (windows, doors, shutters, roller shutters, insect screens, roller insect screens, panels, etc.)