[CROPL: <Width> ]
[CROPR: <Width> ]
[CROPT: <Height> ]

<Width> == <Integer>

<Height> == <Integer>

Crop from Left,

Crop from Right,

Crop from Top

This modifiers decrease the size of a picture - from left, from right or upside down respectively. The integer parameter specifies the amount of pixels, which will be removed from the picture (and not the resulting size of the picture) !