Internet PLC Forum

I'm a very new user. I'm checking out the 5.3 educational version before I decide if I want to purchase a more elaborate package. I'm just getting my feet wet and I have a problem with the second circuit in the tutorial assignment. My Tab key works every where else but does not work in the program. I can not get the insertion box to shift to the left on the NO Manual contact so to add the Step contact. Without the ability to manipulate the insertion point, I can go no further. Please help.