Set of navigation tools for increasing or decreasing the magnification of the current view of the model.
The following zoom tools are available:
- Zoom Window
. Allows you to draw a box and zoom into that area. - Zoom
. Standard click/drag zoom. - Zoom Selected
. Zooms in/out to show the selected geometry. - Zoom All
. Zooms out to show the whole scene.
Zoom Window
The tool is activated by clicking Zoom Window in the Zoom drop-down on the navigation bar. In this mode, you can zoom into an area of the model by dragging a rectangular box around the area you want to fit in the Scene View.
Zoom
The tool is activated by clicking Zoom in the Zoom drop-down on the navigation bar. It behaves the same way as the Zoom tool available on the SteeringWheels.
Zoom Selected
The tool is activated by clicking Zoom Selected in the Zoom drop-down on the navigation bar. Alternatively, you can click Item Tools tab 
Look At panel Zoom
on the ribbon. The camera zooms so that the selected items fill the Scene View. Zoom Selected tool replaces legacy View Selected tool.
Zoom All
The tool is activated by clicking Zoom All in the Zoom drop-down on the navigation bar. Using this function dollies and pans the camera so that the entire model is shown in the current view, which is very useful if you get lost inside a model or lose it completely. Zoom All tool replaces legacy View All tool.
Occasionally, you may get a blank view. This is usually because there are items that are very small in comparison to the main model, or items that are located a long way away from the main model. In these cases, right-click an item in the Selection Tree and click Focus on Item to find your way back to the model before trying to figure out which items are "lost".