With this tool you can save your selections. Run the script and a window will appear, write a name to identify the current selection and click ‘add’. Whenever you need this selection again just click it’s name in the ‘Sets’ list¹. The list below shows the selected nodes, and if you click them you’ll change the selection order.
I usually save things that are hard to select in the camera view so I don’t have to search for them in the network view, or when I often have to select several objects together I keep them saved in the list.
¹ If you hold CTRL while clicking, the selection will be added to your current selection.