Method Image.Layer()->crop()
- Method crop
 crop(objectintxoff,intyoff,intxsize,intysize)- Description
 - 
Crops this layer at this offset and size. Offset is not relative the layer offset, so this can be used to crop a number of layers simuntaneously.
The fill values are used if the layer is enlarged.
 - Returns
 - 
a new layer object
 - Note
 - 
The new layer object may have the same image object, if there was no cropping to be done.