Many thanks to Jeff T. for his answer.
Hi John -
It's possible that you're just not interpreting the cursor
correctly. To use the clone tool you need to
(a) select it from the toolbar
(b) On the image, move the cursor over the area you wish to
(c) Ctl-left-click to set the source of the clone
(d) Move your cursor to the area you wish to clone to, and draw
using the left mouse button.
You will be using the current brush, btw.
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