The damage from the fire 'was restricted' to the rear of the building. [=the rear of the building was the only part damaged by the fire]
The doctor 'restricted' her 'to' a low-fat diet. [=she was only allowed to eat a low-fat diet]
Only a 'restricted' [='limited'] number of students will be allowed in the class.
(..) MAN : Looking at the board or the camera. Straight at the camera lens, if you can... ...if you can see where that is. Right there. TAYLOR: it's always going to be restricted. And when you wear a mask that is this deep off the face... ...no matter how much perforations you put... (..)2012 The Hobbit: An Unexpected Journey