System information
To choose an output device, click the Output   button and choose a bus or hardware output from the menu.
When you route busses to hardware outputs, the outputs  from those busses will not be included in the 
mix when you render your  project.
Monitoring bus levels with VU/PPM meters
When the VU Meters control region is visible, you can display  volume unit (VU) and peak program (PPM) 
meters to help you determine the  perceived loudness of your audio signal (peak program meters provide 
faster  response times to volume increases than VU meters). 
To show or hide the VU Meters control region, click the  VU Meters button  in the View Controls pane.
Right-click the meter and choose a setting from the shortcut  menu (or hover over the meter and roll your 
mouse wheel) to change the  resolution and display options. For more information, see "Monitor track levels 
with VU/PPM meters" on page 358.
Monitoring bus levels with peak meters
When the Meters control region is visible, each bus displays  meters you can use to monitor output levels.
To show or hide the Meters control region, click the Meters button in the  View Controls pane.
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