Summary of a variety of things you may have seen

system variables, global variables and local variables

let statement with many variables on the same line

increment shorthand += and ++

mouseX, mouseY

width, height

windowWidth, windowHeight

mousePressed()

Challenge:

• How can you edit the drawing program to make use of random. Maybe when you mousePress it changes color/size/stroke

canvas is what you see on screen

graphics is a hidden object similar to a canvas that can be drawn on the actual canvas. It can be drawn multiple times as well.

createGraphics - similar to createCanvas although it is a hidden canvas that can be drawn