Package-level declarations

A_Character is an interface that specifies the character-specific operations that an AvailObject must implement. It's a sub-interface of A_BasicObject, the interface that defines the behavior that all AvailObjects are required to support.

CharacterDescriptor implements an Avail character. Avail characters are Unicode characters, and their code points fall in the range 0..0x10FFFF, (decimal 0..1,114,111), which includes the Supplementary Multilingual Planes.