Use Display > Hide to hide items you aren’t working on and reduce visual clutter. This is handy if you want to remove an object from the view, but do not want to delete it or move it.
To display items, use the Display > Show submenu, which includes the same selections as Display > Hide.
To control the display of CVs, select the CVs that you want to remain visible, and then useDisplay > Hide > Hide Unselected CVs to hide all the other CVs on that surface. This affects the display of CVs in component selection mode, as well as CVs displayed in object selection mode by the use of Display > NURBS > CVs.
The selective CV display function operates exclusively from other Maya Hide and Show commands, and therefore menu selections such as Display > Show > All and others do not effect CVs whose display has been set using selective CV display.