.FFIL File Extension
File TypeMac Font Suitcase
File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.
What is an FFIL file?
Collection of fonts used by Mac OS X; stored in a "suitcase" format than may contain multiple bitmap or TrueType fonts; should be stored in the System Fonts or user Fonts folder.
NOTE: Mac OS X font suitcase files use "FFIL" as the file type info code. Some FFIL files may have a different file extension such as .DFONT.