Insert Knot
Command
Insert Knot
Shortcut
-
Button
Toolbar 
Insert a CV (Control-Vertex) in a spline curve.
Basic Usage
- Click the button
on the Toolbar. - Click on the point where you want to insert a CV.
- A CV is inserted, adding additional point to the spline curve.
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Note Inserting a Control-Vertex requires the curve to be a spline; otherwise, no effect will occur on a regular segmented curve.