Each behavior has a name that is a symbol in the keyword package, and is associated with a set of values that describe the different variations of that behavior that different FRSs provide. For example, the behavior called :facets describes what type of support the FRS provides for slot facets. A value of t for that behavior means facets are supported, and a value of nil means that facets are not supported.
The remainder of this chapter describes the behaviors in detail. Each section describes a single behavior, or a group of related behaviors.