System information
3. 
Click the Automation  Settings button   for each track you want to edit with the control surface  
and choose Automation  Write (Touch) or Automation  Write (Latch) to enable automation  
recording. For more information, see "Recording Track Envelope and Keyframe Automation" on 
page 270.
To enable automation recording for audio busses or the main video output,  use audio bus tracks or 
the video  bus track. For more information, see "Audio Bus Tracks" on page 246 and "Video Bus 
Track" on page 248.
4.  Use the functions on your  control surface to edit your project.
Using a Mackie Control
The Mackie Control is fully supported by Vegas Pro.  An overlay is available from Mackie that you can use 
to label the Mackie Control  buttons and controls with their mapped functions in Vegas 
Pro:http://www.mackie.com/products/mcu/index.html.  
You can download a full-size, printable version of the overlay from 
http://download.sonycreativesoftware.com/current/extras/mackiecontroloverlay.pdf.
The overlay identifies the default control mapping. You can also customize  the buttons and controls on the 
Mackie control. When you use the default  mapping, the Mackie Control is divided into several functional 
areas.  All functionality described in this topic refers to the default control  mapping.
For information about your Mackie Control, please refer to the manufacturer's  documentation.
For more information about setting up a control surface, see "Using a Control Surface" on page 529.
The Mackie Control Universal can control either  trim or automation settings. In order to control 
automation settings,  the Automation  button in the Audio/Video section must be selected, and the 
track or bus  you want to edit must be set to Automation  Write (Touch) or Automation  Write (Latch). 
Hold the F1 button while turning the V-Pot (or use  the Automation Settings  button  ) to change the 
automation recording mode for each track and  bus track.
Configuring channel mappings for Mackie Control Extenders
If you're using Mackie Control Extenders. you'll need to  set up your channel mapping.
For example, if your Mackie Control Universal is on the  left of your Mackie Control Extender, you could 
configure the Mackie Control  to adjust channels 1 through 8 and use the Mackie Control Extender to  adjust 
channels 9 through 16.
If you have a Mackie Control Universal positioned between  two Mackie Control Extenders, you could adjust 
channels 1 through 8 on   the left Extender, adjust channels 9 through 16 on the Mackie Control  Universal, 
and adjust channels 17 through 24 on the right Extender.
1.  From the Options menu, choose  Preferences to  display the Preferences dialog.
2.  Select the External Control   & Automation tab.
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