What is MFI?

I found a blinkie on a TTC website and it says "TTC with MFI", what does the MFI stand for?

http://www.mylittlebean.com/All%20Blinkies/TTC/MFI.gif
Update: Oh, okay! Well then I don't think I need that one. Well at least I don't know that we have a problem yet anyways!

Thank you!!
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