The viewing center is called the Point-of-Interest. It defaults to the grid origin but can be re-positioned by clicking on a piece of geometry during viewing (Shift + Alt + Mouse on Windows, Shift + Command + Mouse on Mac).
The viewing center is called the Point-of-Interest. It defaults to the grid origin but can be re-positioned by clicking on a piece of geometry during viewing (Shift + Alt + Mouse on Windows, Shift + Command + Mouse on Mac).