Chapter 4. Managing Profiles

Profiles are used by Firefox to store data that is specific to a user. You can save and restore profiles, share profiles with other users, and customize your profiles both by using Firefox and by carefully editing (perhaps using WordPad) the files that make up your profile.

When Firefox loads, it first loads all the default preferences. It then loads the preferences stored in prefs.js. Finally, it loads the preferences stored in user.js. Any setting in prefs.js overrides the default value, ...

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