Arrow Posted on 2nd November 201517th July 2021 by ThePD (The Project Definition) An Arrow is 1) a sign consisting of a straight line with an upside down; 2) a graphic representation of an activity flow. Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window) Related Posted in General and tagged word. ThePD (The Project Definition) ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.