about:config
Biasanya setelah terbuka, akan muncul peringatan seperti dibawah ini.
This Might Void Your Warantty!
Changing this advanced setting can be harmfull to the stability, security and performance of this application. You should only continue if you are sure of what you are doing.
Klik saja I’ll be carefull, I Promise!. Anda akan segera masuk ke halaman config firefox. Untuk mengabaikan peringatan ini lagi di lain waktu, uncentang atau hapus select Show this warning next time.
selesai.
