Because label and envelope layouts behave a tad differently than most layouts, they're covered separately on pages 157160.
To switch to layout mode
Choose View > Layout Mode (Figure 11.9).
Figure 11.9. To switch to Layout mode, choose View > Layout Mode.
or
Use your keyboard: , in Windows, on the Mac.
or
Click on the T-square button at the top of the tool panel (top, Figure 11.10) or the status mode pop-up at the bottom of your screen (bottom, Figure 11.10).
Figure 11.10. You also can switch to Layout mode by clicking the T-square button at the top of the tool panel (top) or the pop-up at the bottom of the status area (bottom).