Four zoom settings control how large or small the page appears in the workspace. These are available on a floating toolbar (which can be docked in the top toolbar) or through the Zoom dialog box.

To view the zoom toolbar click the Zoom tool button.

To zoom to a selectable size, click the zoom button  and drag the mouse around the objects to magnify. Zoom is adjusted to the area selected.

All of the available zoom options can be viewed by selecting Zoom from the View menu.