! $Id: mid,v 1.1 2001/12/07 16:54:15 toast Exp $
MID(index count string)
  Returns count characters from string starting at the index.
  The first character of the string has index 0.

Example:
  mid(3 5 this is a test)	- Returns "s is ".

See also:
  FUNCTIONS LEFT
  FUNCTIONS RIGHT
