ADDED   mttroot/mtt/bin/trans/m/cause2name.m
Index: mttroot/mtt/bin/trans/m/cause2name.m
==================================================================
--- /dev/null
+++ mttroot/mtt/bin/trans/m/cause2name.m
@@ -0,0 +1,27 @@
+function name = cause2name(causality)
+% cause2name - converts causality to a string
+% 
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+%     %%%%% Model Transformation Tools %%%%%
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% 
+% Matlab function  cause2name
+% name = cause2name(causality)
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Copyright (c) P.J. Gawthrop, 1996.
+
+if causality==1
+  name = 'effort';
+elseif causality ==-1
+  name = 'flow';
+else
+  name = 'state';
+end;

ADDED   mttroot/mtt/bin/trans/m/cause2num.m
Index: mttroot/mtt/bin/trans/m/cause2num.m
==================================================================
--- /dev/null
+++ mttroot/mtt/bin/trans/m/cause2num.m
@@ -0,0 +1,27 @@
+function num = cause2num(causality)
+% cause2num - converts causality to a string
+% 
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+%     %%%%% Model Transformation Tools %%%%%
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% 
+% Matlab function  cause2num
+% num = cause2num(causality)
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Copyright (c) P.J. Gawthrop, 1996.
+
+if causality==1
+  num = 1;
+elseif causality ==-1
+  num = 2;
+else
+  num = 3;
+end;

ADDED   mttroot/mtt/bin/trans/m/sign2name.m
Index: mttroot/mtt/bin/trans/m/sign2name.m
==================================================================
--- /dev/null
+++ mttroot/mtt/bin/trans/m/sign2name.m
@@ -0,0 +1,26 @@
+function name = sign2name(sign);
+% sign2name - converts sign to a string
+% 
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+%     %%%%% Model Transformation Tools %%%%%
+%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% 
+% Matlab function  sign2name
+
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+if sign==1
+  name = '+';
+elseif sign ==-1
+  name = '-';
+else
+  name = '??';
+end;