ADDED   mttroot/mtt/lib/comp/compound/Thermal/CompressibleFlow/Density/Density_lbl.txt
Index: mttroot/mtt/lib/comp/compound/Thermal/CompressibleFlow/Density/Density_lbl.txt
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/comp/compound/Thermal/CompressibleFlow/Density/Density_lbl.txt
@@ -0,0 +1,41 @@
+%SUMMARY Density - Computes  P and T.
+
+%DESCRIPTION Parameter: density,ideal_gas,gas_constant
+%DESCRIPTION OR       : specific_volume,ideal_gas,gas_constant
+%DESCRIPTION OR       : density,incompressible,gas_constant
+%DESCRIPTION OR       : specific_volume,incompressible,gas_constant
+%DESCRIPTION Port [P]: Pressure
+%DESCRIPTION Port [T]: Temperature
+%DESCRIPTION Port [rho]: Density
+
+%ALIAS	P	Pressure
+%ALIAS	T	Temperature
+%ALIAS	rho|out	Density
+
+%ALIAS	$1	density,ideal_gas,r
+
+
+
+%% Label file for system Density (Density_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 R
+	r		Density		density,ideal_gas,r
+
+% Component type SS
+	[Pressure]	SS		external,external
+	[Temperature]	SS		external,external
+	[Density]	SS		external,external