Scripting command: tunnel [Top=0...1] [Left=0...1] [Right=0...1] [Bottom=0...1] [Percent=1...100] [Indents=1...100] [Alpha=0...1]
The tunnel operator takes an image and inserts it inside itself, smaller. The percentage of reduction is (100% - [2 times the Percentage setting]) because the inset percentage applies to both sides of the image.
The ✓ Left, ✓ Right, ✓ Top and ✓ Bottom settings cause the tunnel effect to snug up to the selected side(s.)
The Indents slider controls how many times the insertion is performed.
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