Apple Numbers '08 - Manual (Page 267)

Chapter 12 Dictionary of Functions 267
RIGHT
The RIGHT function retrieves the specified number of characters from the right end of a
string.
RIGHT(text, [length])
 text: A text expression.
 length: Optional; the number of characters you want to retrieve. If omitted, returns 1
character.
ROMAN
The ROMAN function converts a number to Roman numerals.
ROMAN(number, [style])
 number: The Arabic numeral that you want to convert. Must be nonnegative and less
than 4000.
 style: Optional; determines how strictly the classical rules for forming Roman
numerals are applied:
0 (or TRUE, or omitted) uses the most strict classical rules. When a smaller numeral
precedes a larger to indicate subtraction, the smaller must be a power of 10 and can
precede a number no more than 10 times its size. For example, 999 is represented as
CMXCIX, but not LMVLIV.
1 relaxes the strict classical rule by one degree. When a smaller number precedes a
larger, the smaller need not be a power of 10 and the relative size rule is extended by
one numeral. For example, 999 can be represented as LMVLIV, but not XMIX.
2 relaxes the classical rule by two degrees. When a smaller number precedes a larger,
the relative size rule is extended by two numerals. For example, 999 can be
represented as XMIX, but not VMIV.
3 relaxes the classical rule by three degrees. When a smaller number precedes a
larger, the relative size rule is extended by two numerals. For example, 999 can be
represented as VMIV, but not IM.
4 or FALSE relaxes the classical rule by four degrees. When a smaller number
precedes a larger, the relative size rule is extended by two numerals. For example,
999 can be represented as IM.
Examples
RIGHT("one two three", 2) returns "ee".
RIGHT("abc") returns "c".