Synopsis:
   $afterw(<word> <text>)

Technical:
   This function returns its input string, minus all words up to the
   the given word ($afterw()).  It is analogous to $after(), operating
   on whole words instead of characters.  It searches only for the first
   occurrence of the given word.

Practical:
   This returns the part of the input text that is after the first instance
   of the given word.  This is probably most useful for internal parsing
   inside scripts; a variable might hold certain parameters, of which only
   certain ones might be useful at a particular time.  If the given word
   does not appear in the input text, nothing is returned.

Returns:
   afterw:  input list after first instance of given word

Examples:
   $afterw(foobar one two foobar my shoe)    returns "my shoe"
   $afterw(booya one two foobar my shoe)     returns ""  (empty string)

