Returns one of the two strings Heads or Tails. There is an equal probability of returning either one.

Roll the described combination of dice, returning a number and description of the roll. The dice expr is a combination of terms of one of three forms joined by +:

• {n}d{s}: roll n s-sided dice (3d6)
• {n}x{s}: roll n s-sided exploding dice (2x8)
• {n}: an increment.

The number of sides supported are 3, 4, 6, 8, 10, 12, 20, or 100. Exploding dice work much like normal, except when a die rolls the maximum value for the die, then it is re-rolled to generate a value to add to the original roll. This may happen more than once.

The Value is the sum of all of the rolls. The Roll is a string representing the individual rolls.

Normal dice are represented by the expression, followed by the results of the individual die rolls in parens: 3d6(3+5+1).

Exploding dice are represented by the dice expression followed by an expression in angle brackets. The expression is made of the results of each individual die in parens, with any die that exploded being followed by an !, and the re-roll added as needed: 3x6<(1)+(6!+5)+(2)>.

The Save Expression button saves the current dice expression under a name you supply. If you save an empty expression, it deletes the one that you name.

The menu at the bottom provides access to any expressions you've saved, plus a few default ones. The default expressions are named starting with a * and will always be at the end of the list. The Load Expression button populates the expression with the value you saved. The Remove Expression button deletes the specified saved expression.

Draw a random card from the specified deck.

This command returns a string randomly selected from the Oracle's set of 9 positive answers, 9 negative answers, or 6 indeterminate answers.

Treats the supplied integer as a percentage and returns true that percent of the time. Otherwise, return false.

Selects a number between two supplied integers (inclusive) with equal probability. The two numbers cannot be the same.

Selects one of the supplied strings with equal probability. There must be at least two strings to choose between. The strings should be entered one per line.

The Save List button saves the current list under a name you supply. If you save an empty list, it deletes the list that you name.

The menu at the bottom provides access to any lists you've saved, plus a few default lists. The default lists are named starting with a * and will always be at the end of the list. The Load List button populates the string list with the values you saved. The Remove List button deletes the specified saved list.