How a tiling pattern's spacing may be adjusted to the device pixel grid, its TilingType entry.
[SuppressMessage("Design", "CA1008:Enums should have zero value", Justification = "The values are the numbers the PDF entry holds; 0 is not one of them.")]
public enum PdfTilingType
ISO 32000-2 §8.7.3.1, Table 74.
kind:method, kind:property, kind:ctor. Press Esc to clear.ConstantSpacingConstant spacing (1): the cell may be distorted by up to one device pixel.ConstantSpacingFasterConstant spacing and faster tiling (3): more distortion is allowed.NoDistortionNo distortion (2): the spacing may vary by up to one device pixel.