# Defining the Default Tension, Continuity and Bias Values

As you work on the shape of your motion path, you can change the default tension, bias, or continuity values using the Sceneplanning tab in the Preferences dialog box.

Toon Boom Studio uses the values you select for all future motion points you add; existing motion points are not changed.

To define the default Tension, Continuity, and Bias values:

1. Open the Preferences dialog box. Select Toon Boom Studio > Preferences.

The Preferences dialog box opens.

2. Click the Sceneplanning tab.

3. Type the default values in any of the following fields. You can type any value between -1.0 and 1.0:

- Default Tension: controls how sharply the path bends as it pass through a motion point.
- Default Continuity: controls the smoothness of a transition between the segments joined by a point.
- Default Bias: controls the slope of the path so that it flows towards one side of the motion point or the other.

4. Click OK when you are done.

See Also
Adding Motion Points to a Motion Path
Moving Motion Points with the Motion Point Tab
Creating a FB Motion Path
Creating a NS or EW Motion Path
Adjusting the Curve Between Motion Points