File contains precompiled JavaScript and chrome.
File extension used by Microsoft Windows XP.
Data file created by Mozilla products such as Thunderbird and Firefox; contains cached data for the XUL (XML User Interface Language) interface elements or the XPC components of the software; enables the program to load user interface components more quickly. Common MFL files include xul.mfl and xpc.mfl. These files, if deleted, will be recreated automatically by the software.