Special classes of objects can also
be created new. This program creates a new turtle, tells
it to wear an orange shell, and tells it to move forward.
You can create as many turtles as you like this way.
t = new Turtle t.wear orange t.fd 100
Turtle is a predefined class of objects. When you new Turtle, it
creates an object that knows how to do several things like wear
(a function that changes the shell color) and fd (a function that moves
the turtle forward).
Functions attached to objects like t.fd are called methods.
Some classes are not visual: for example Date creates an object
that represents a date and Array creates an object that
contains a list of other objects.
d = new Date write d.getFullYear()