Tables that a GM and/or players could access based on a variable, rather than a random roll. For example: Something like <9 -1 9:12 0 >12 1 could be called "Modifiers" and accessed like this: $Modifiers[@Strength] to get a character's strength mod given their "Strength" attribute without adding another attribute to the character that might need to change if the "Strength" attribute changes.