By default, both tangents on an anchor scale evenly. This keeps the arc of the curve balanced on both sides of the anchor.
You can weight the tangents on an anchor to one side manually to create an uneven arc.
To weight a set of tangents
A marking menu appears.
When you move one tangent away from the anchor, the opposite tangent is unaffected.
Alternatively you can select a tangent and select
.You can even out weighted tangents so they are the same distance from the anchor.
To even tangents
A marking menu appears.
The tangents align to the same distance from the anchor.
You can also align the tangents to an average of both tangents by selecting the anchor instead of a tangent and performing these steps.
Alternatively you can select a tangent and select
.