TYPE: SOP
TITLE: Crease SOP

Crease adds the "creaseweight" attribute to polygon edges for use with the
Subdivide operation.  The group field expects a string as follow, each word 
separated by a space:

Examples:
    n                  - n is an integer.      Creases all edges in primitive n.
    pa                 - a is an integer.      Creases all edges with point a.
    nem                - n and m are integers. Creases edge m of primitive n.
    pa-b               - a and b are integers. Creases edge between points a
                                               and b.

Parameters:
    Group                    - The edges to crease.

    Operation                - 
	Add To Existing Value - Accumulates the crease value 
	Set                   - Replaces existing crease with specified one
	Delete                - Removes crease value

    Crease                   - Crease value                              /crease

    Add Vertex Color         - Adds color to creased vertices to give visual
                               feedback.

See Also: Subdivide
