Act a thing done; a deed. Action the (fact or) process of doing something, typically to achieve an aim. Activity the condition in which things are happening or being done. A thing that a person or group does or has done. Actor anyone or anything that performs a behavior (who is using the system). Category:Agent/Intro Category:Belief/Intro Category:Benefit/Intro Context the circumstances that form the setting for an event, statement, or idea, and in terms of which it can be fully understood and assessed. Essay a short piece of writing on a particular subject. Event a thing that happens, especially one of importance. Formula a method, statement, or procedure for achieving something, especially reconciling different aims or positions.> Category:Heading/Intro Category:Inflow/Intro Category:Institution/Intro Formula a method, statement, or procedure for achieving something, especially reconciling different aims or positions.> Method a particular form of procedure for accomplishing or approaching something, especially a systematic or established one. Category:Operation/Intro Category:Outflow/Intro Category:Parameter/Intro Category:Place/Intro Category:Person/Intro Practice the customary, habitual, or expected procedure or way of doing of something. Policy a course or principle of action adopted or proposed by a government, party, business, or individual. Category:Procedure/Intro Process a series of actions or steps taken in order to achieve a particular end. Category:Reason/Intro Category:Result/Intro Category:Risk/Intro Category:Role/Intro Category:Sink/Intro Category:State/Intro Task a piece of work to be done or undertaken. Category:Statement/Intro Use Case a written description of how users will perform tasks. It outlines, from a user's point of view, a system's behavior as it responds to a request. Each use case is represented as a sequence of simple steps, beginning with a user's goal and ending when that goal is fulfilled. www.usability.gov Category:Trigger/Intro