←    (leftwards arrow)=&larr;
↑    (upwards arrow)=&uarr;
→    (rightwards arrow)=&rarr;
↓    (downwards arrow)=&darr;
↔    (left right arrow)=&harr;
↵    (downwards arrow with corner leftwards)=&crarr;
⇐    (leftwards double arrow)=&lArr;
⇑    (upwards double arrow)=&uArr;
⇒    (rightwards double arrow)=&rArr;
⇓    (downwards double arrow)=&dArr;
⇔    (left right double arrow)=&hArr;
