Creating Bézier lines
The Bézier Pen tool 
lets you draw multisided Bézier boxes and lines that can have straight and curved line segments (see “Understanding Bézier shapes“).
To draw a Bézier line:
- Select the Bézier Pen tool from the Tools palette. Move the Crosshair pointer
to any position on the page and click to establish the first point. - Move the pointer to where you want the next point positioned. To constrain pointer movement to a 45-degree angle relative to the page, press Shift.
- Click to create a point and line segments.
- To make a curved line segment, click and drag wherever you want the next point positioned. A point with two curve handles displays. You can control the curve’s size and shape by dragging a curve handle.
- To make a corner point, press Option/Alt before you click. If you click and hold, you can control the radius of the corner point by dragging a curve handle.
- To add a point to an existing segment of the shape, click the line segment where you want the point to be.
- To delete a point from the active shape while you are drawing it, click the point.
- To finish the line, double-click.
Note: When any of the drawing tools are active, you can press Command/Ctrl to temporarily switch to the Select Point tool. When the Select Point tool is active, you can press Command+Option/Ctrl+Alt to temporarily switch to the Item tool.
Parent topic: Creating lines