d3.symbolTriangleDown d3.symbolTriangleLeft d3.symbolTriangleRight d3.symbolDiamondAlt d3.symbolDiamondSquare d3.symbolPentagon d3.symbolHexagon d3.symbolHexagonAlt d3.symbolOctagon d3.symbolOctagonAlt d3.symbolX (alias: d3.symbolCrossAlt)