If your production environment includes some post-production applications and tools, it is very likely that you are using EDLs to transfer media and data between them.
Besides standard EDLs, you can work with telecine log files and AAF, FCP XML, and OMF® files. You can import, export, edit, and create EDLs, and capture and import media using EDLs. All of this is described in the Working with EDLs section, which begins with About EDL Files.
Timecode and keycode are essential tools for working with EDLs, or for conform and recapture. Timecode and keycode can be imported with the media, assigned, changed, burned-in, or removed. See Timecode and Keycode.