prefer_asap = True

			prefer_asap = True

			for node in selected_nodes:

			for node in selected_nodes:

				mygraph.remove(node)

				mygraph.remove(node)

				if not reversed and not circular_blocks and myblockers.contains(node):

				if not reversed and not circular_blocks and myblockers.contains(node):

					"""This node may have invalidated one or more blockers."""

					"""This node may have invalidated one or more blockers."""

			if "blocks" == x[0]:

			if "blocks" == x[0]:

				display_list.append((x, 0, True))

				display_list.append((x, 0, True))

				continue

				continue

			graph_key = tuple(x)

			graph_key = tuple(x)

			if "--tree" in self.myopts:

			if "--tree" in self.myopts:

				depth = len(tree_nodes)

				depth = len(tree_nodes)