List

A list is a way of sending multiple values for a single property.

In this case, the values are placed together in a single piece of text, with a symbol (usually a '|' symbol) separating them.

For example, if you'd like to send three numbers in a set called 'ladder', and separated by '|', you'd use the following…

ladder="0,10,30"

An alternative way of transmitting many points is through a Set.