Freezes the currently selected fixtures.
Programmer.Editor.Selection.GetSelectedHandles("Windows.PatchView.Handles")
Programmer.Editor.Fixtures.Patch.FreezeFixtures(Windows.PatchView.Handles, True)
Unfreezes the currently selected fixtures.
Programmer.Editor.Selection.GetSelectedHandles("Windows.PatchView.Handles")
Programmer.Editor.Fixtures.Patch.FreezeFixtures(Windows.PatchView.Handles, False)