From BlenderWiki
[Note: I dumped my old tests here. I'm not sure how much detail this needs, at least the Linestyle Parameters are rather self-explanatory. Josef 18:55, 19 December 2011 (CET)]
Parameter Editor Mode
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Line Set
These settings determine which parts of the geometry of your model are taken into account for calculating the output of a Line Set.
Selection by Visibility
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Selection by Edge Types
| Edge Type Name | Description | Depends on | Example Image |
| Silhouette | ??? | kr derivative Epsilon | 
|
| Border | Draws only on on the edges of unclosed meshes. | Mesh Structure | 
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| Crease | Shows only edges whose adjecent faces form an angle greater than the defined crease angle. | 
| |
| Ridge | Draws ridges. Very similar results to valley. | Sphere Radius | 
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| Valley | Draws valleys. Very similar results to ridge. | Sphere Radius | 
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| Suggestive Contour | Draws some lines which would form the contour of the mesh if the viewport was shifted. Further information here | Kr Derivative Epsilon, Sphere Radius | 
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| Material Boundary | Draws lines where two materials meet on the same object. | 
| |
| Edge Marks | Draws lines on Edges which where marked in edit mode via Mesh » Edges » Mark Freestyle Edge | 
| |
| Contour | Draws the contour lines | 
| |
| External Contour | Draws the contour lines, but only on the outer edges. | 
|
Selection by Face Marks
Draws edges of faces which where marked in edit mode via Mesh » Faces » Mark Freestyle Face
Selection by Group
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Selection by Image Border
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Line Style
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Stroke
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Color
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Alphs
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Thickness
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Geometry
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Misc
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