When the Show Labels button in the Main Window sub-menu of the Attributes Menu or the sub-window Attributes menu is active, labels will be displayed in the window, otherwise label rendering is suppressed. It is unlikely that it would be necessary to turn off the display of labels, unless a layout has so many labels that important features are obscured. Labels are shown in legible orientation by default, however if the Label True Orient button is active, labels will be shown with all transformations applied.