# $EPIC: rsubstr.txt,v 1.3 2007/03/02 02:32:04 jnelson Exp $
======Synopsis:======
$__rsubstr__(<substring> <search string>)

======Technical:======
The <substring> argument is a [[what is a word|dword]] which is unlike most
other functions.

This function searches for <substring> from the end of  <search string>
and returns the $[[index]]() to it.

======Practical:======
They can be used to search for specific things in output from a server,
or as an alternative to $match(*substring* searchstring).

======Returns:======
  * -1 if <substring> not found in <search string>
  * index to <substring> in <search string> if found

======History:======
The $rsubstr() function first appeared in EPIC4pre1.016.