The numbers commands allows you to perform math in your commands.

Number – specify the number you want to use in the operation. + - performs addition – 5 + 3 = 8 - - performs subtraction – 5 – 3 = 2 X – performs multiplication - 5 x 3 = 15 / - performs division – 5 / 3 = 1.67 mod – gets the remainder after division – 5 mod 3 = 2 (5 / 3 = 1 r. 2)

This is similar to the example for the repeat, but in this case we are changing the color each time it repeats. We take the current value of color (which is 0 the first time through) and add 2 to it, giving us 2 for the color on the second loop, 4 for the third and so on.

One note on the color: If I increase the color value by 5 each time then when it gets to 99 it starts over again at 0.