Returns the value of $arg modified so that every character in the value of $arg that occurs at some position N in the value of $map has been replaced by the character that occurs at position N in the value of $trans.

If the value of $arg is the empty sequence, the zero-length string is returned.

Every character in the value of $arg that does not appear in the value of $map is unchanged.

Every character in the value of $arg that appears at some position M in the value of $map, where the value of $trans is less than M characters in length, is omitted from the returned value. If $map is the zero-length string $arg is returned.

If a character occurs more than once in $map, then the first occurrence determines the replacement character. If $trans is longer than $map, the excess characters are ignored.

i.e. fn:translate("bar","abc","ABC") returns "BAr"