What you'll learn:
The difference between "Any" and "All" operators.
When you add two filters to the people module you will immedaitely see the filter "All". This means that the user must match on both the filters inside the rectangle it's attached to. You can think of the ALL opeartor as the "AND" group of filters.
In the example above, any user that is a prospect AND has the label "US Citizen" will be added to the segment.
In the next example above, a user that is a prospect OR has the label "US Citizen" will be applied to the segment.
ALL + ANY
In the example above both the ANY and ALL opeartors are being used. This segment reads as follows: any user that is a prospect OR a suspect and a user with total email opens greater than three OR a suspect with the user label "remove from workflow".