Zoom Section

Tools on the View menu for controlling on-screen display
Tools on the viewport toolbar for controlling on-screen display

Zoom Section zooms in on a section. To do this, press and hold down the left mouse button and enclose the elements you want to zoom in a selection rectangle.

Note: If several viewports are open, you can zoom in on a section only in the viewport where you actually clicked this icon (viewport toolbar) or in the viewport that was current when you selected this tool (View menu).

Tip: Instead of using the Zoom Section tool, you can also press and hold down the right mouse button to zoom in on a section.