Netlisting is the process of generating a set of connected items from a schematic drawing. Traditionally this was needed for creating a "netlist" for PCB layout: a list of electrical nets, and all the component pins that are part of each net. We now also use this term in KiCad to refer to determining which graphical objects in a schematic are electrically connected to each other. This includes the component pins that are part of a traditional netlist, but also things like graphical wires and labels that are used to connect pins to each other.