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→Setting and Locking Preferences
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You may choose to use obscured values in mozilla.cfg by changing the obscure_value above to 13 (for byteshift 13), but beware you will need to go through an additional step to convert the plain-text config to an obscured version every time you make a change. Also note that the method used to obscure the config file is easily reversible. For example:<source lang="javascript">pref("general.config.obscure_value", 13);pref("general.config.filename", "mozilla.cfg");</source>
Next, create your mozilla.cfg file. Open Firefox and enter about:config in the address bar to see all of the available configuration options. Note that the first line must a comment, any options configured in the first line will be ignored.
If using an obscured config, this should be saved as mozilla.txt instead and converted to an obscured mozilla.cfg. Online conversion: http://alain.knaff.linux.lu/howto/MozillaCustomization/cgi/byteshf.cgi
If any issues you may alternatively run moz-byteshift.pl available here - https://developer.mozilla.org/en/Automatic_Mozilla_Configurator/Locked_config_settings
The perl interpreter is required - http://www.activestate.com/activeperl
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