Triangle-headed rightwards arrow

It points forward: next, leads to, or look here.

Arrows as direction signs took hold in eighteenth-century engineering diagrams and maps, showing water flow and wheel rotation; the drawn arrow gradually lost its feathers and kept the head. Earlier, pointing hands in medieval manuscripts marked important passages, and printers later cast small ornaments, called dingbats, for directions and emphasis. ➝ comes from that dingbat line.