Editing Use case (section)

== Definition ==

In [[software engineering|software]] and [[systems engineering]], the phrase use case is a [[Polysemy|polyseme]] with two [[Word sense|senses]]:
# A usage scenario for a piece of software; often used in the plural to suggest situations where a piece of software may be useful.
# A potential scenario in which a system receives an external request (such as user input) and responds to it.
This article discusses the latter sense. {{Printworthy self-reference|(For more on the other sense, see ''[[Persona (user experience)]]''.)}}