int a = 5; // No curly braces, so scope is global

void setup ()
{
  println("a = " + a);
  int a = 11; // This copy of a is local to setup()
  println("a = " + a);
  a = 9; // Modifies *local* copy of a
  println("a = " + a);
}

void draw () { println("a = " + a); } // *global* version