You can use the Bézier Tool to precisely draw smooth curves, node-by-node. As each node is created, you can control the curvature of the line by manipulating the node's control points.
Select the Bézier Tool from the Curve flyout (Figure 7.5).
The pointer changes to a cross-hair with a tiny curve connected to it.
Figure 7.5. Select the Bézier Tool from the Curve flyout.
Click to position the first node.
Click to place the next node. A straight line segment appears between the two nodes (Figure 7.6).
Figure 7.6. Click once to place the first node and a second time to place the next node. ...