Roger Mills wrote:
It's used when you want 3 or more switches to be able independently to
switch a single light (or group of lights wired in parallel).
Two-way switching is straightforward, but if you want 3 or more ways you

c/ways/points/

3-way switching is where a switch has three selection options, eg
off, ignition, drive.

The confusion arises because two-point switching uses two-way
switches.
Three (and more) point switching uses two two-way switches and one
(or more) intermediate/crossover switches.

--
JGH