Synopsis:
   $wordtoindex(<word number> <list>)

Technical:
   The $wordtoindex() function returns index offset of the given word
   number in the given list of words. The count is from zero.

Practical:
   This function is useful if you need to find the start of a word in a
   string

Returns:
   index to word

Examples:
   $wordtoindex(2 foo bar blah)           returns 8

See Also:
