FLIPFLY

The parameter FLIPFLY can be used to mirror the objects arranged either horizontally or vertically. Also, the direction of the arrangement can be defined.

mirrhor	The objects arranged are mirrored horizontally.
mirrvert	The objects arranged are mirrored vertically.
dwn	The objects are arranged in the processing direction from top to bottom.
up	The objects are arranged in the processing direction from bottom to top.
toright	The objects are arranged in the processing direction from the left to the right.
toleft	The objects are arranged in the processing direction from the right to the left.