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GroupTableAdd Method
Adds a new empty group to the group table.

Namespace: Rhino.DocObjects.Tables
Assembly: RhinoCommon (in RhinoCommon.dll) Version: Rhino 6.0
Syntax
public int Add()

Return Value

Type: Int32
>=0 index of new group. -1 group not added because a group with that name already exists.
Remarks
In some cases, calling Add() can cause the group indices to become invalid.
See Also