It
zooms in and out like a camera lens. (This is not the same as
Zoom, which moves the view in and out of the scene.)
Zoom Region This flyout icon nested with Field of View allows you to drag a
rectangle marquee around the area you want to zoom in on.
This tool is available only in Orthographic/User and Perspective
viewports.
Walkthrough This flyout icon is nested with Pan View (the hand icon). This
very cool tool lets you move through a viewport by pressing the
arrow keys. It is similar to the Pan tool, but you use the arrow key
for navigation instead of the mouse. When you enter the Walkthrough
Navigation mode, the pointer changes to a hollow circle
that shows a directional arrow while you are pressing one of the
arrow keys. Walkthrough is available only for Perspective and
Camera viewports.
Arc Rotate This flyout Icon is nested with Arc Rotate Selected and Arc Rotate
SubObject. Arc Rotate lets you rotate a viewport by clicking and
dragging a series of handles on the gizmo (shown in Figure 3.38).
Uses the viewport center as the center for its rotation. The shortcuts
are Alt+MM and Ctrl+R.
Arc Rotate Selected This flyout icon is nested with Arc Rotate and Arc Rotate SubObject.
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