let msg = "hello world"; // defines variable

let emptyMsg; // declares variable to be used later on

​

function setup() {

  createCanvas(400, 400);

  // print (x);

​

  let msg = "in setup"; // will overwrite the global one if you redefine it in a function, this definition wont apply to the function draw section, the global scope will apply to the function draw section (unless you redefine in the function draw section)

  print(msg);

}

​

function draw() {

  background(220);

}

​