Synopsis::
   $chngw(<index> <word> <text>)

Technical:
   This function returns its input text, with the given word replacing the
   word pointed to by the index.  Words are counted from 0 (zero).

Practical:
   This function changes a single word in a list of words to another word.
   This might be useful for changing a user's permission bits in a variable
   that holds a script's access levels.

Returns:
   text with new word inserted

Examples:
   $chngw(2 blah foo bar booya)          returns "foo bar blah"

See also:
   insertw(6); remw(6); splice(6)