adder = 0

		for i1 = 1:6

			i1 
			adder = adder + i1

		end

		adder


Command Window Variables 
		% Index Vector
		[1, 2, 3, 4, 5, 6] % Same as 1:6

		% Variables in Memory
		i1    = % (not yet in memory)
		adder = % (not yet in memory)


Drag slider to step through the for loop: