For Firefox, type CTRL + H. Your search history will be displayed by time up to three months ago, by date and site, by site, by most visited, and by last visited. You can also search for a specific site in the Firefox history search box.
perk 1. v. perked, perkÂ·ing, perks. v. intr. 1. To stick up or jut out: dogs' ears that perk. 2. To carry oneself in a lively and jaunty manner. v. tr. To cause to stick up quickly: The dog perked its ears at the noise. adj. Perky.
Perks are special skills required for upgrading weapons, armor, for building a settlement and so on. Perks were important part of gameplay in all Fallout games and Fallout 4 is not an exception.