Description: Reverse string search. Returns the start position
of the last StringSought in StringSearched starting in position Start.
When Start is omitted the search starts
from the end of the string.
StringSearched : String to be
searched for the string StringSought StringSought : String to
be sought in string StringSearched Start : Optional. Index of the character in
StringSearched to start the searching for StringSought. When omitted the
search starts at the end of the string. Compare : Optional. Constant
to denote the method of searching: 0 denotes binary compare (Case sensitive)
and 1 (default) denotes a text compare.
Find the position of the last Word
world in hello world (=0: cannot be found) =InStrRev("hello