•
and — Zoom in and zoom out. Click to activate, and drag the cursor over the
region to zoom. The zoom icon turns dark when zoom is active. Right-click while zoom
is active to access additional zoom options. Click the icon again to deactivate.•
— Pan. Click to activate, and drag the cursor across the plot area to pan. The pan
icon turns dark when pan is active. Right-click while pan is active to access additional
pan options. Click the icon again to deactivate.9 Classical Control Design