flowchart LR
  Start[Start]
  Stop[Stop]
  Start --> From([<tt>from</tt>])
  From --> Unit([<a href="Identifier">Identifier</a>])
  Unit --> Use([<tt>use</tt>])
  Use --> Ident([<a href="Identifier">Identifier</a>])
  Ident --> Semi([<tt>;</tt>])
  Ident --> Comma([<tt>,</tt>])
  Comma --> Ident
  Comma --> Semi
  Semi --> Stop

  style Start fill:#44E
  style Stop fill:#E44