View commands

These commands apply regardless of where in the request they appear.

align	Aligns the view with the composite image.
bgc	Sets the view background color.
fit	Fits the view to the composite image.
hei	Sets the view height.
rect	Specifies the final view rectangle.
rgn	Specifies a region-of-interest in the composite image.
scl	Sets the composite image to view scale factor.
wid	Sets the view width.