--- /dev/null
+/*********************************************************************
+ * Clustal Omega - Multiple sequence alignment
+ *
+ * Copyright (C) 2010 University College Dublin
+ *
+ * Clustal-Omega is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This file is part of Clustal-Omega.
+ *
+ ********************************************************************/
+
+/*
+ * RCS $Id: tree.h 193 2011-02-07 15:45:21Z andreas $
+ */
+
+#ifndef CLUSTALO_TREE_H
+#define CLUSTALO_TREE_H
+
+#include "symmatrix.h"
+#include "muscle_tree.h"
+#include "seq.h"
+
+enum {LEFT_NODE = 0, RGHT_NODE, PRNT_NODE, DIFF_NODE};
+
+extern void
+GuideTreeUpgma(tree_t **tree,
+ char **labels, symmatrix_t *tmat, char *ftree);
+
+extern int
+GuideTreeFromFile(tree_t **tree,
+ mseq_t *mseq, char *ftree);
+
+extern void
+TraverseTree(int **piOrderLR_p,
+ tree_t *tree, mseq_t *mseq);
+
+#endif