Operation Styles
Emboss command has 5 styles: Add, Subtract, Highest Union, Lowest Union and Absolute. They are available in the following operations: By Profile, Extrude, Based on Geometry, Revolution, Heightfield, Brush, Carbon Copy.


Add: It indicates to RhinoEmboss that this relieve will be added to last one.



Subtract: The operation will subtract current geometry from the last one's operation geometry.

Highest Union: When operations will be computed it will keep the highest points of generated geometry.



Lowest Union: When operations will be computed it will keep the lowest points of generated geometry.



Absolute: RhinoEmbos won't take care about any merge option, it will place the geometry  in absolute values.