Use the Zoom tool to change the viewable area in the window, and the Thin Lines tool to maintain the true thickness of lines relative to the zoom of the view.
The following Zoom options are available on the navigation bar:
If the navigation bar is hidden in your view, click View tabWindows panelUser Interface drop-downNavigation Bar.
You can also zoom project views using the SteeringWheels.
Typically, when you zoom in on a model in a small scale view, element lines appear much thicker than they actually are.
When you activate the Thin Lines tool, it affects all views but does not affect printing or print preview.
To activate the tool, click View tabGraphics panelThin Lines.