The Zoom Rectangle Tool selection can be used to draw a rectangle over a portion of the Drawing Canvas to specify a precise zooming location. It provides finer control than the Pinch and Zoom gesture when zooming in on specific figures within the Drawing Canvas.
This option is accessible when an extended Click is performed over the Move, Zoom, and Selection Tool button. Click on the Zoom Rectangle Tool and it will appear in place of the standard Move, Zoom, and Selection Tool in the Drawing Toolbar.
Use a Click/Drag action to drag the rectangle over a desired area and then release this action to complete the selection. In this example, the red circle and blue square are selected with the Zoom Rectangle Tool.
The Drawing Canvas will automatically zoom in on the figures within the selected area.