To Show or Remove Hidden Lines
In a model, you can remove or control the display of hidden lines, in hidden components and bodies.
Click 
on the Quick Access toolbar. Click one of the following buttons on the list.
on the Quick Access toolbar. Click one of the following buttons on the list.• 
Hidden Line—Hidden lines are displayed in gray. The toolbar button shows dotted lines for clarity.
Hidden Line—Hidden lines are displayed in gray. The toolbar button shows dotted lines for clarity.• 
No Hidden—Hidden lines are removed.
No Hidden—Hidden lines are removed.or
1. Click > > .
2. Under Geometry display settings, in the default geometry display list click Hidden Line or No Hidden Line.
3. Click Save All to save customizations as well as configuration option changes to the active profile. Click Save Only Customization to save only UI customizations to the active profile. Configuration option changes are applicable only to the current session.