9c2787c1_he_Beat__A_Blog_by_PremiumBeat__Description
[Command] Render selection Render all [Shortcut] Control+r Shift+Control+r [UI Icon] N/A [Description] 
Render selection allows you to start rendering tasks for a selection in your Timeline; Render all allows you to start all rendering tasks.
Final Cut Pro X Shortcuts - The Big Cheat Sheet - The Beat: A Blog by PremiumBeat
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