A simple and basic hamburger (menu) icon. It originates from Xerox "Star" workstations of the 1980's but is now popular to hide/show menus on mobile devices.<br/>漢堡（菜單）圖標<br/>basic、black、close、cox、hamburger、icon、lines、menu、norm、open、rounded、simple、star、WebButtons、white、xerox<br/>基本、黑色、關、考克斯、漢堡包、圖標、線、菜單、規範、打開、圓、簡單、星、WebButtons、白色、複印<br/>資料來源：openclipart ( https://openclipart.org/ )