PPSC Past Paper Assistant Director Planning & Development Department-2019 Solved MCQs, Computer MCQs, PPSC Assistant Agricultural Department 2018, PPSC Solved Past Papers MCQsIn MS Windows key F1 is mostly used for? Posted on April 21, 2021August 3, 2021 by Rana TahirA. Exit B. Refresh C. Help D. RestartShare this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on LinkedIn (Opens in new window)