ISPSoft User Manual If the users release the left mouse button after they drag the connection point to another network which matches the port, the port will be connected to the network. Deleting a single network by means of a context menu After users right-click a network, and click Delete the Network on the context menu, the network and the lines connected to the network will disappear. Deleting several devices or several networks Users can select several objects by holding down Shift on the keyboard. Besides, the users can select multiple devices by dragging a selection net around them, or selecting all the objects in the working area by pressing Ctrl+A on the keyboard. 20-24