Crop the sketch.
Cropping to a selected
rectangular area
. 
The cursor changes to a cross with an arrow.
Lift the stylus to select the area.
to select
an irregularly shaped area crops the picture to the smallest rectangle
surrounding that area.
to remove
unselected parts of the sketch.
(or
press the S key).
Cropping to a particular
sizeThe Canvas Size window appears. It shows the current pixel size and memory size in the top panel.
The default units are pixels, but you can change them to inches, cm, or mm. Or, specify a percentage.
