

   CClluusstteerriinngg TTrreeeess -- GGeenneerriicc FFuunnccttiioonn

        pltree(x, ...)

   AArrgguummeennttss::

          x: an S-PLUS object.

        ...: methods may have additional arguments.  Graphical
             parameters (see `par') may also be supplied as
             arguments to this function.

   DDeessccrriippttiioonn::

        Creates a clustering tree on the current graphics
        device.  This is a generic function.  Functions with
        names beginning in `pltree.' will be methods for this
        function.  `twins'.

   SSiiddee EEffffeeccttss::

        a clustering tree is created on the current graphics
        device.

   SSeeee AAllssoo::

        `twins.object', `agnes', `diana', `par'.

