Thanks for reaching out to us!
In order to use Clone, simply:
1. Open the Clone tool
2. Click the area you want to copy from. This is the “source” position.
3. Click and drag over the area you want to paste to.
To change the source position you can click the “Select Source” button and then repeat steps 2 and 3.
That should be it. Does that work for you?
– Regards, The Ribbet Team