A more thorough explanation:

A saving clause is a provision in a law that exempts something from being included in the law's coverage. It is often used in a repealing act to preserve rights and claims that would otherwise be lost.

1. A state passes a law that bans the use of certain pesticides. However, the law includes a saving clause that exempts farmers who have already purchased and used the pesticides before the law was passed. This means that those farmers will not be punished for using the pesticides, even though they are now banned.

2. A city passes a law that requires all new buildings to be a certain height. However, the law includes a saving clause that exempts buildings that have already been approved for construction before the law was passed. This means that those buildings can still be built, even though they do not meet the new height requirement.

These examples illustrate how a saving clause can be used to exempt something from a law's coverage. In both cases, the saving clause preserves the rights of those who have already taken certain actions before the law was passed.