Labels for marking cables. You can immediately see the length of your cable and, thanks to the label, you can recognize it from strangers.
On the pad, select which one you want to delete (DEL) and which one to copy for multiple pieces (Ctrl C - Ctrl V). You can easily adjust the colors on the left in the Objects tab. You don't need anything for assembly, just put the label on. If necessary, you can adjust the size of the label in bamboo studio (Orca slicer).