ADDED   mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyCylinder_lbl.txt
Index: mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyCylinder_lbl.txt
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyCylinder_lbl.txt
@@ -0,0 +1,33 @@
+%SUMMARY LeakyCylinder: Pseudo bond graph model of compressible gas dynamics
+
+%DESCRIPTION This example roughly corresponds to the Example in
+%DESCRIPTION section 12.4.3 (Fig. 12.17) of Karnopp, Margolis and Rosenberg
+%DESCRIPTION (1990). It is a pseudo bond graph representation based on the
+%DESCRIPTION "thermal acummulator" of section 12.4.1 and the "isentropic
+%DESCRIPTION nozzle" of section 12.4.2 of that book.
+
+%% Label file for system LeakyCylinder (LeakyCylinder_lbl.txt)
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%% Each line should be of one of the following forms:
+%	a comment (ie starting with %)
+%	Component-name	CR_name	arg1,arg2,..argn
+%	blank
+
+
+
+% Component type CG
+	bottom		none	c_v;r
+	top		none	c_v;r
+
+% Component type LeakyPiston
+	piston		none	m_p;a_b;a_t;gamma;r;0
+
+% Component type SS
+	shaft		external	external

ADDED   mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyPiston_lbl.txt
Index: mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyPiston_lbl.txt
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/LeakyPiston_lbl.txt
@@ -0,0 +1,32 @@
+%SUMMARY LeakyPiston: Leaky piston sub model
+%DESCRIPTION <Detailed description here>
+%% Label file for system LeakyPiston (LeakyPiston_lbl.txt)
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%% Each line should be of one of the following forms:
+%	a comment (ie starting with %)
+%	Component-name	CR_name	arg1,arg2,..argn
+%	blank
+
+
+
+% Component type Piston
+	piston		lin	$1;$2;$3
+
+% Component type RG
+	leak		lin	$4;$5;$6
+
+% Component type SS
+	[mass_b]		external	external
+	[mass_t]		external	external
+	[mechanical_b]		external	external
+	[mechanical_t]		external	external
+	[shaft]		external	external
+	[thermal_b]		external	external
+	[thermal_t]		external	external

ADDED   mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/Piston_lbl.txt
Index: mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/Piston_lbl.txt
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/examples/GasDynamics/LeakyCylinder/Piston_lbl.txt
@@ -0,0 +1,29 @@
+%SUMMARY Piston: simple model of the piston
+%DESCRIPTION Inludes inertia and pressure effects.
+%% Label file for system Piston (Piston_lbl.txt)
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%% Each line should be of one of the following forms:
+%	a comment (ie starting with %)
+%	Component-name	CR_name	arg1,arg2,..argn
+%	blank
+
+
+
+% Component type I
+	m_p		lin	flow,$1
+
+% Component type SS
+	[bottom]		external	external
+	[shaft]		external	external
+	[top]		external	external
+
+% Component type TF
+	a_b		lin	flow,$2
+	a_t		lin	effort,$3