In Editor, go to the expert tab. Open picture B, the one you wish to select something from to add to another picture. Use one of the selection tools, e.g. selection brush, lasso tool, to select the object. You will see an outline ("marching ants") once the selection is complete Go to Edit menu>copy to copy the selection to the clipboard Open picture A, then go to Edit>paste Use the move tool to position object from picture B. In the layers palette you should see picture A as the background layer, and object B on a separate layer.
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