This will repeat the commands for each value of the variable between start and end. Commonly used in programs as an unpassable delay. Essential command for Animation on a graphing calculator, since this can create delays smaller than one second, the minimum amount of time Timers can measure. (84) :For(Variable,start,end,step):commands:End (89) :For Variable,start,end,step:commands:EndFor This is the same as the previous command, except it will calculate all values between start and end with increments of step, rather than one.