Turning this option on will allow you to use various developer tools in browser context (via Tools > Web Developer > Browser Toolbox) and debug add-ons from the Add-ons Manager
Armad n uɣewwaṛ-agi ad k-yeǧǧ ad tesqedceḍ ifecka n tneflit deg umnaḍ n iminig (s Ifecka > Taneflit web > Tanaka n ifecka n iminig) wa d yessireg taseɣtit n izegrar seg umsefrak n izegrar