[header] How to write a use case [title] Write a goal statement. [step] Write a sentence or two that briefly describes the primary goal of implementing the technology or business process. Define specifically the goals of the primary user of the system. 
A use case can be written to describe the functionality of any business process or piece of software or technology a business uses. [substeps] For example, you could write use cases about logging into a system, managing an account or creating a new order.