PDF Creator Pilot supports the following pattern tiling types:

Name	Description	Value
pttConstantSpacing	Constant spacing. Pattern cells are spaced consistently - that is, by a multiple of a device pixel. The amount of distortion does not exceed 1 device pixel.	0
pttNoDistortion	No distortion. The pattern cell is not distorted, but the spacing between pattern cells may vary by as much as 1 device pixel, both horizontally and vertically, when the pattern is painted.	1
pttConstantSpacingAndFasterTiling	Constant spacing and faster tiling. Pattern cells are spaced consistently as in tiling type 1 but with additional distortion permitted to enable a more efficient implementation.	2