Snipping a TIN to a Polygon

It is easy to remove parts of a TIN that do not overlap a Polygon item.

1. Select the TIN.
2. Select Edit > TINs > Snip.
3. Click on the Polygon item; this should lie completely within the TIN. Else you will see this warning.
   
4. New nodes are created in order to complete the triangular faces.

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