Thanks for taking the time to try it out. The option key is the one between the control key and the command key on the left of the spacebar. You can also find it to the right of the command button on the right of the spacebar. I wonder, did you hold it down while you dragged the corner? It can be a bit tricky to catch that little cross on the right.

Thanks for following. Looked you up and read your article above – great help. However, I have a mac and don’t have an “option”. I have tried using fn, ctrl, alt and cmd – all the keys along the bottom but no luck. Can you say what you mean by using an option? Thanks loads. Rosemary