title: Precondition in an Use Case
body: <p>I'm creating a Use Case for a project for school and I'm confused about the precondition field.  I can understand preconditions like, "must be logged in" or "needs an account." </p>
  
  <p>But what if the software is a local setup? To me, it sounds logical that a precondition is that "the software needs to be installed."  But on the other hand, this precondition looks weird because otherwise, you would not have this Use Case in the first place.</p>
  
  <p>So my question, in short, is: Can system requirements or software installation be a part of a precondition?</p>