about:config preferences can be customized using the user.js files. See https://github.com/pyllyukko/user.js/#installation for some examples. For addons and other options you can use policies.json file, see…
about:config preferences can be customized using the user.js files. See https://github.com/pyllyukko/user.js/#installation for some examples. For addons and other options you can use policies.json file, see…