In tabletop RPG books, dice are correctly notated as“1d6,” that is, [quantity of dice]d[die size]. 1d20, 6d6, 3d8, and so on—all correct. Much as the serial comma is the Oxford comma, in this case the quantified 1d6 becomes the New York 1d6. Compare: “roll 1d6” (correct) vs“roll d6” (incorrect) vs“roll a d6” (incorrect). “1d6 goblins” (correct) vs“d6 goblins” (incorrect). “longswords deal 1d6 damage” (correct) vs“longswords deal d6 damage” (incorrect). Withou...