ADDED   mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig
Index: mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig
@@ -0,0 +1,23 @@
+#FIG 3.2
+Portrait
+Center
+Metric
+A4      
+100.00
+Single
+-2
+1200 2
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2475 3825 2475 2475 2700 2700
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2475 5625 2475 4275 2700 4500
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2700 4050 4050 4050 3825 4275
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 2
+	 4050 3825 4050 4275
+2 4 0 2 31 7 52 0 -1 0.000 0 0 7 0 0 5
+	 5625 6570 5625 1575 1350 1575 1350 6570 5625 6570
+4 1 0 100 0 18 20 0.0000 4 210 240 2475 2295 I:i\001
+4 0 0 100 0 18 20 0.0000 4 270 795 4185 4185 Sf:f_0\001
+4 1 4 100 0 18 20 0.0000 4 270 900 2475 6030 SS:[in]\001
+4 1 0 100 0 18 20 0.0000 4 195 150 2475 4185 0\001

ADDED   mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig.bak
Index: mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig.bak
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/comp/compound/General/IS/IS_abg.fig.bak
@@ -0,0 +1,23 @@
+#FIG 3.2
+Portrait
+Center
+Metric
+A4      
+100.00
+Single
+-2
+1200 2
+6 2340 3915 2610 4185
+4 1 0 100 0 18 20 0.0000 4 270 195 2475 4185 0\001
+-6
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2475 3825 2475 2475 2700 2700
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2475 5625 2475 4275 2700 4500
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 3
+	 2700 4050 4050 4050 3825 4275
+2 1 0 2 0 7 100 0 -1 0.000 0 0 -1 0 0 2
+	 4050 3825 4050 4275
+4 1 0 100 0 18 20 0.0000 4 285 315 2475 2295 I:i\001
+4 0 0 100 0 18 20 0.0000 4 360 1035 4185 4185 Sf:f_0\001
+4 1 4 100 0 18 20 0.0000 4 360 1185 2475 6030 SS:[in]\001

ADDED   mttroot/mtt/lib/comp/compound/General/IS/IS_lbl.txt
Index: mttroot/mtt/lib/comp/compound/General/IS/IS_lbl.txt
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/comp/compound/General/IS/IS_lbl.txt
@@ -0,0 +1,39 @@
+%% Label file for system IS (IS_lbl.txt)
+%SUMMARY IS I component with initial state
+
+
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% Version control history
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %% $Id$
+% %% $Log$
+% %% Revision 1.1  2000/12/28 17:29:11  peterg
+% %% To RCS
+% %%
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+% Port aliases
+%ALIAS	in	in
+
+% Argument aliases
+%ALIAS	$1	flow,i
+%ALIAS	$2	f_0
+
+%% Each line should be of one of the following forms:
+%	     a comment (ie starting with %)
+%	     component-name	cr_name	arg1,arg2,..argn
+%	     blank
+
+% ---- Component labels ----
+
+% Component type I
+	i		lin	flow,i
+
+% Component type SS
+	[in]	 SS	external,external
+
+% Component type Sf
+	f_0		SS	f_0
+
+