NurbsSurfaceKnotList Class 
Namespace: Rhino.Geometry.Collections
The NurbsSurfaceKnotList type exposes the following members.
Name  Description  

ClampedAtEnd  Determines if a knot vector is clamped.  
ClampedAtStart  Determines if a knot vector is clamped.  
Count  Gets the total number of knots in this curve.  
Item 
Gets or sets the knot vector value at the given index.

Name  Description  

CreatePeriodicKnots 
Compute a clamped, uniform, periodic knot vector based on the current
degree and control point count. Does not change values of control
vertices.
 
CreateUniformKnots 
Compute a clamped, uniform knot vector based on the current
degree and control point count. Does not change values of control
vertices.
 
EnsurePrivateCopy 
If you want to keep a copy of this class around by holding onto it in a variable after a command
completes, call EnsurePrivateCopy to make sure that this class is not tied to the document. You can
call this function as many times as you want.
 
EpsilonEquals 
Check that all values in other are within epsilon of the values in this
 
Equals  (Inherited from Object.)  
GetHashCode  (Inherited from Object.)  
GetType  (Inherited from Object.)  
InsertKnot(Double) 
Inserts a knot and update control point locations.
Does not change parameterization or locus of curve.
 
InsertKnot(Double, Int32) 
Inserts a knot and update control point locations.
Does not change parameterization or locus of curve.
 
KnotMultiplicity  Get knot multiplicity.  
RemoveKnots 
Remove knots from the knot vector and adjusts the remaining control points to maintain surface position as closely as possible.
The knots from Knots[index0] through Knots[index1  1] will be removed.
 
RemoveKnotsAt 
Remove knots from the surface and adjusts the remaining control points to maintain surface position as closely as possible.
 
RemoveMultipleKnots  Remove multiple knots from this surface  
SuperfluousKnot 
Computes the knots that are superfluous because they are not used in NURBs evaluation.
These make it appear so that the first and last surface spans are different from interior spans.
http://wiki.mcneel.com/developer/onsuperfluousknot  
ToString  (Inherited from Object.) 