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# Locking or Hiding a Curve

You can lock a parameter to stop its curve from being editable within the Curve Editor.

To locking a parameter and stop it from being editable within the Curve Editor, click within the hierarchical view in the Curve Editor. If you then want to unlock the parameter again, click .

Note: Parameters that are expressions are always locked and cannot be modified within the Curve Editor.

Even though a parameter has Show Curve selected, you may not want to display it within the Curve Editor graph.

To hide a parameter curve within the Curve Editor, click within the hierarchical view in the Curve Editor. If you then want to show the parameter curve again, click within the hierarchical view in the Curve Editor.