preTransform property
preTransformis a slash-separated list of TwicPics API transformations that perform before the automatic resizing of the image.
You can check the TwicPics documentation to see the list of API transformations.
If you set thefocusproperty, it will apply before all transformations of thepreTransformproperty.
Be aware that usingpreTransformcan lead to unexpected results, so use with caution!