Statements are the elements that make up programs. Comments are used for making notes to help people better understand programs. A comment begins with a hash mark ("#").

# The size function is a statement that tells the computer
# how large to make the window.
# Each function statement has zero or more parameters.
# Parameters are data passed into the function
# and are used as values for telling the computer what to do.
size(640, 360)

# The background function is a statement that tells the computer
# which color (or gray value) to make the background of the display window
background(204, 153, 0)