loquak found these unused words:
Hello.
When I select the source position for cloning of an image, is it possible to do it so that the source Y-axis stays locked and only the X-position will change? Or vice versa.
Thanks.
Hold SHIFT, that limits the drag to 0, 45 or 90 movement. Once started you can’t change the angle if you drift off a bit.
It’s all covered by pressing F1 under "Clone Tool"