Adobe ACROBAT 3D Manual page 636

Transparency flattener options
You can set the following options in the Flattener Preview window, PDF Optimizer, or the
Advanced Print Setup dialog box.
Raster/Vector Balance
Use the slider to set the percentage of vector information that will be preserved. Higher
settings preserve more vector objects, while lower settings rasterize more vector objects;
intermediate settings preserve simple areas in vector form and rasterize complex areas.
Line Art And Text Resolution
Rasterizes all objects, including images, vector artwork, text, and gradients, to the
specified resolution, from 72-2400 pixels per inch (ppi).
Gradient And Mesh Resolution
Specifies the resolution of gradients and meshes that have been rasterized as a result of
flattening, from 72-2400 ppi. Higher settings may slow performance of the file without
resulting in noticeable improved quality.
Convert All Text To Outlines
Ensures that the width of all text in the artwork stays consistent. Selecting this option,
however, causes small fonts to appear noticeably thicker (especially when printing on
lower-end printing systems). In addition, it may make small fonts less readable and
significantly degrade flattening performance.
Convert All Strokes To Outlines
Ensures that the width of all strokes in the artwork stays consistent. Selecting this option,
however, causes thin strokes to appear slightly thicker (especially when printing on lower-
end printing systems). In addition, it changes the appearance of strokes and may
significantly degrade flattening performance.
Clip Complex Regions
Ensures that the boundaries between vector artwork and rasterized artwork fall along
object paths. This option reduces stitching artifacts that result when part of an object is
rasterized while another part of the object remains in vector form (as determined by the
Raster/Vector slider). However, selecting this option may result in extremely complex
clipping paths, which take significant time to compute, and can cause errors when printing.
Preserve Overprint
Blends the color of transparent artwork with the background color to create an overprint
effect.