Arbitrary Dice
Besides creating a die based on a single number, you can also create a die based on a sequence, for example d{1,2,4,4}. This allows you
to create dice of any shape. It is also possible to explicitly create dice based on another die or collection of dice.
output d{1..6} named "d6"
output d{-1..1} named "Fudge die"
output d{2, 3, 3, 4} named "2d2"
output 2d(2d2) named "4d2"
output d{} named "the empty die"