Elevator

mouseWidth = 0
mouseHeight = 0
-- this creates two variables called mouseWidth
-- and mouseHeight and sets them to 0.

monitor = peripheral.wrap("bottom")
-- you need this line! It tells the computer
-- the monitor at bottom.

monitor.clear()
-- this clears the monitor screen

monitor.setCursorPos(1,1)
-- this sets the cursor position to the top left
-- corner of the monitor

w,h=monitor.getSize()
-- gets the width and the height of the monitor
-- and stores the numbers as w and h.
-- w and h are variables

print(w)
print(h)
-- prints the w and h to the computer screen.