Comment 99 for bug 233901

The document in the URL is outdated. First, the directory structure for prefs
has changed. Also, There's no information about how to lock a preference in the
UI, which can be critical for admins, and I haven't found a right way to do
this, just ignore the changes but the preference is reachable, and unknown
value. Please work a little more on this, even with basic examples (I've tried
changing the cache disk size, if you want to take it as example), together with
an additional file, in order to separate from original .js files.