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‌To move selected control points using the pointer, do one of the following:‌‌

— Drag on the selected points anywhere in the viewer.

— Hold Shift while dragging to restrict movement to a single axis.

— Hold Option and drag anywhere in the viewer to move the selected control point.

To move selected control points using the keyboard, do one of the following:

— Press the Up or Down Arrow keys on the keyboard to nudge a point up or down in the viewer.

— Hold Command-Up or Down Arrow keys to move in smaller increments.

— Hold Shift-Up or Down Arrow keys to move in larger increments.

Smoothing a Polyline Segment

If you want to shape the polyline and control its slope, you can choose to smooth a spline segment by adjusting the Bézier direction handles.

To smooth the selected points on an active polyline, do one of the following:

— Press Shift-S.

— Click the Smooth button on the Polyline toolbar.

— Choose Smooth from the polyline’s contextual menu.

The Smooth button in the toolbar (Shift-S)

Linearizing a Polyline Segment

To make certain that a polyline segment is perfectly straight, that segment must be linearized. A linear segment aligns the Bézier direction handles with the segment and therefore has no curvatures. The segment is always drawn in a straight line between two points on the polyline.

To linearize the selected points on an active polyline, do one of the following:

— Press Shift-L.

— Click the Linear button on the polyline’s toolbar.

— Choose Linear from the polyline’s contextual menu.

The Linear button in the toolbar (Shift-L)

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