Items under Display Settings Preferences control the visibility and attributes of certain features in the display window, such as the X-Y-Z orientation marker and the background color. If you want to turn ON the right-side Visibility tree (OFF is the default), control its visibility here. The Visibility tree allows selection and de-selection and visibility attributes of items in the 3-D View. The Show Information Labels preference setting controls the visibility of labels. Turning it OFF prevents the display of labels on points in a point cloud.