Cash Account floor/ceiling?

The user manual says that the "table allows you to specify floor and ceiling amounts for your cash account in terms of today’s dollars for up to two time periods."

• are the floor/ceiling entries in each of the two rows effective for every year afterwards (or until the next year for which there's an entry)?
• if not, how do I model floor/ceiling limitations for several years, or to be in effect, say, for a decade?