* Clear the superfluous stretchable areas through selection.
* Automate minimising the stretchable patches that are defined by the left and top lines to 1px width or height. (Only supports the NinePatch images that have a 1-pixel-wide black line
in stretchable areas).
* Draw and remove the 1-pixel-wide black line.
* Duplicate patches from an active document to another.
* Export the PNG for devices.
- Ashung Hung