flowchart LR
  Start[Start]
  Stop[Stop]
  Start --> OpenParen([<tt>#40;</tt>])
  OpenParen --> CloseParen([<tt>#41;</tt>])
  OpenParen --> StartArg(( ))
  StartArg --> Ident([<a href="Identifier">Identifier</a>])
  StartArg --> Var([<tt>var</tt>])
  StartArg --> Const([<tt>const</tt>])
  Var --> Ident
  Const --> Ident
  Ident --> Equals([<tt>=</tt>])
  Equals --> Default([<tt>?</tt>])
  Default --> EndArg
  Ident --> EndArg(( ))
  EndArg --> CloseParen
  EndArg --> Semi([<tt>;</tt>])
  Semi --> CloseParen
  Semi --> StartArg
  CloseParen --> Stop