Synopsis:
   $after([<count>] <char> <text>)

Technical:
   This functions returns the portion of <text> after the <count>th instance
   of any of the characters in <char>.  The <count> argument is optional and
   must be a non-zero integer value to be accepted.  If <count> is a positive
   integer, the counting begins at the beginning of <text>.  If <count> is a 
   negative integer, the counting begins at the end of <text>.  If <count> is
   not provided, then the function will act as if <count> were 1.

Practical:
   Sometimes it is useful to break apart strings that you know have a certain
   format, but you don't know where the characters are.  The $userhost() 
   function returns a "user@host", and if you want to get the hostname out
   of that, you can do $after(@ $userhost()) [everything after the first @].
   If you want to get the username out of that, see the help files for the 
   $before() function.  Or let's say that you are trying to figure out what 
   top-level-domain a user is from.  You can do that with 
   $after(-1 . $userhost()) [everything after the last dot]

Returns:
   The input string <text> after the <count>th occurance of any character
	in <char>.  The default value for <count> is 1.

Examples:
   $after(@ hop!jnelson@wicked.neato.org)     returns "wicked.neato.org"
   $after(-1 . hop!jnelson@wicked.neato.org)  returns "org"
   $after(-2 . hop!jnelson@wicked.neato.org)  returns "neato.org"
   $after(2 . hop!jnelson@wicked.neato.org)   returns "org"
   $after(3 !@. hop!jnelson@wicked.neato.org) returns "neato.org"
