Allows to crop an image by providing the exact cropping area. It is useful when you want to crop a specific part of the image. To set the coordinates of the crop rectangle, use the tl_px and br_px operations or the X and Y Parameters are an alternative way to set the coordinates.
Positionable crop is a separate operation can be combined with all available resize functions - Width and height, Crop, Fit, Bound and Cover. This resize is always performed after the positionable crop.
