Class

From FLWiki

A class specifies a type or kind of entity. Each class is part of a domain, and each entity is an instance of a class. Examples of classes would be “Goal,” “Action,” or “Obstacle.” Flying Logic comes with a set of built-in classes useful for common reasoning activities, and users of Flying Logic Pro can devise their own domains and classes. Each entity has a colored bar at the top that specifies its class.