Labelling Networks
You can modify the usual order of execution of networks through a jump statement, which transfers the program control to a labelled network. To assign a label to a network, double-click the raised grey button on the left that bears the network number; or, after selecting a network, choose Scheme>Network>Label.
This causes a dialog box to appear, which lets you type the label you want to associate with the selected network.
If you press OK, the label is printed in the top left-hand corner of the selected network.