> Looking around, it seems a lot of systems contain the "multiple"

module

> in at least pairs or more. What do these do for me I'm a little
> unclear.
>

You can also use the multiple for non linear mixing as Allen Strange
says in his book. You patch two or more oscillators to two different
jacks/ multiple ins and use another jack as output - a simple mixer -
which will introduce a more profound beating of the oscillators.

keld