As can be seen in the Display to th

As can be seen in the Display to the right, when youclick (once) on a node, it is circled in green and given auseful label; any other nodes you happened to hit willalso be selected. If you click elsewhere, the original nodeis deselected. And you can now drag objects and movethem around the environment. Try it!Selection and dragging works for continuous environments and certain gridworld scenarios. At presentyou can’t select or drag edges.Selection is presently somewhat primitive: you can’tband-select (create a rectangle and select all the elementsin it) nor hold down the shift key and select/deselectobjects selectively. And though you can select more thanone object at a time, you can’t present move more thanone object at a time. Perhaps in a later version.