Synopsis:
   $uniq(<list of words>)

Technical:
   This function takes an arbitrary list of arguments and returns all that
   are unique.  The output is in the same order as the input, using the
   first occurrence of each word.

Practical:
   This function is useful for weeding out duplicates from a list of words
   (such as a list of nicknames for a tabscript).

Returns:
   list of unique words from input list

Examples:
   $uniq(one two three two one)       returns "one two three"
   $uniq(blah blah blah)              returns "blah"

See Also:
   remw(6); remws(6);