On page 4 of your main notebook is a notebook full of sensors. These are great for making things respond to the mouse and keyboard. There are also sensors for measuring time, getting random numbers, and the address of the house. Some sensors are for bringing in pictures, sounds, text, and ToonTalk objects from the outside.
Sensors work very much like the controllers for pictures .
If it is negative the mouse is moving from right to left. A speed of 1000 means the mouse can cross the screen in 1 second. This sensor measures how fast the computer's mouse is moving up. If it is negative the mouse is moving down. A speed of 1000 means the mouse can cross the screen in 1 second.