icon, vector, symbol, icon set, clip art, design element, graphical user interface, line icon, outline, stroke - illness, accuracy, alertness, application form, cloud computing, communication, correspondence, data, document, e-mail, e-mail inbox, e-mail spam, envelope, exchanging, expressionism, global communications, infographic, information equipment, information medium, internet, letter - document, letterbox format, mail, mailbox, message, note - message, note pad, office supply, online messaging, paper, paperwork, portability, report - document, send, sending, text, text messaging, arrow - bow and arrow, arrow symbol, arrowhead, circle, direction, directional sign, loading, loopable elements, road sign, the way forward, traffic arrow sign, wayfinding icon, chain mail - armor, chain mail - textile,