3.
3.1.
3.1.1.
3.1.2.
3.2.
3.2.1. Inheriting APIs
This is the usual case: an API that builds on previous standards. For example, POSIX builds on ANSI.
3.2.2. Standalone APIs
This is the usual case: an API that builds on previous standards. For example, POSIX builds on ANSI.