'[b]0CC'[/b] is the file extension added in '[[0CC-FamiTracker] version 0.3.14.0 to distinguish between vanilla '[[FamiTracker] modules and those using the features exclusive in 0CC-FamiTracker.

0CC files are a superset of FTM files. If an 0CC module is known not to use any 0CC-FamiTracker features, it may be opened in official FamiTracker by selecting "All files (*.*)" in the Open File dialog, in the same way .ftm.bak files were opened. '[-s](although official FamiTracker is never able to produce backup files even if that option is enabled in the configuration menu)'[/-s]