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+-- Copyright 2012 by Till Tantau
+--
+-- This file may be distributed an/or modified
+--
+-- 1. under the LaTeX Project Public License and/or
+-- 2. under the GNU Public License
+--
+-- See the file doc/generic/pgf/licenses/LICENSE for more information
+
+-- @release $Header: /cvsroot/pgf/pgf/generic/pgf/graphdrawing/lua/pgf/gd/trees/library.lua,v 1.2 2013/04/04 20:43:45 tantau Exp $
+
+
+
+---
+-- \tikzname\ offers several different syntax to specify trees (see
+-- Sections \ref{section-library-graphs}
+-- and~\ref{section-trees}). The job of the graph drawing algorithms from
+-- this library is to turn the specification of trees into beautiful
+-- layouts.
+--
+-- We start this section with a description of algorithms, then we have a
+-- look at how missing children can be specified and at what happens when
+-- the input graph is not a tree.
+--
+-- @library
+
+local trees -- Library name
+
+-- Load declarations from:
+require "pgf.gd.trees.ChildSpec"
+require "pgf.gd.trees.SpanningTreeComputation"
+
+-- Load algorithms from:
+require "pgf.gd.trees.ReingoldTilford1981"
+