Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Inheritance in the AMPAL framework. Top: Arrows indicate inheritance, with objects at the head of the arrow inheriting all of the methods and attributes of the more generic object at the base of the arrow. Bottom: Examples of specifications in the AMPAL framework. The specification classes are shown in light grey boxes
