System information
Item Description
Markers/Regions Choose a command from the submenu to add or delete markers  or 
regions. For more information, see "Inserting markers" on page 217 
and "Inserting regions" on page 218.
Quantize to Frames Forces edits to occur on frame boundaries. For more information, see 
"Quantize to Frames" on page 142.
Enable Snapping When snapping is enabled, the Snap  to Grid and Snap to Markers 
commands become available. For more information, see "Enable 
Snapping" on page 139.
Snap to Grid Select this  command to force elements in the timeline to snap to the 
grid. The grid  is defined in units of time. For more information, see 
"Enable Snapping" on page 139.
Snap to Markers Select this  command to force elements in the timeline to snap to 
markers. For more information, see "Enable Snapping" on page 139.
Snap to All Events Select this  command to force elements in the timeline to snap to the 
ends of events  on other tracks. For more information, see "Enable 
Snapping" on page 139.
Grid Spacing Choose a command from the submenu to set the spacing of vertical 
grid lines along the timeline.
Selectively Prerender 
Video
Opens the Prerender Video dialog, where you  can create a full-quality 
preview of your project as it will appear in  its final form. For more 
information, see "Selectively Prerender Video" on page 478.
Clean Up Prerendered 
Video
Removes the  temporary files created as a result of using the 
Selectively   Prerender Video command. For more information, see 
"Cleaning Up Prerendered Video" on page 479.
Transport Controls
The transport bar contains the  playback, recording, and cursor-positioning buttons frequently used while  
working on a project.
During project playback, audio  tracks will be mixed to the Master bus unless you are using a custom  bus 
assignment. Video tracks will be mixed to the Video  Preview window.
For more information, see "Assigning Tracks to Busses" on page 335 and "Using the Video Preview Window" 
on page 465.
You can choose Edit >Navigate and choose a command from the submenu to navigate the timeline 
quickly.
Button Name Description
Record Starts recording on all armed tracks. If no tracks  are armed, a new 
track will be created automatically. For more information, see 
"Recording audio" on page 116.
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