% -*- texinfo -*-
% @deftypefn {Function File} {} treelayout (@var{Tree})
% @deftypefnx {Function File} {} treelayout (@var{Tree}, @var{permutation})
% treelayout lays out a tree or a forest. The first argument @var{Tree} is a vector of
% predecessors, optional parameter @var{permutation} is an optional postorder permutation.
% The complexity of the algorithm is O(n) in
% terms of time and memory requirements.
% @seealso{etreeplot, gplot,treeplot}
% @end deftypefn