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diff --git a/docs/examples/vl_isa.py b/docs/examples/vl_isa.py
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+++ b/docs/examples/vl_isa.py
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+#!/usr/bin/env python
+""" very light isa hmi mockup
+prog de test infrastructure ivy + mini ihm type isa """
+
+import traceback, time, os, sys, string, getopt
+from Tkinter import *
+from ivycpy import *
+
+APPNAME = "vl_isa"
+
+def lprint(fmt,*arg):
+	print APPNAME + ": " + fmt % arg
+
+def usage(scmd):
+	lpathitem = string.split(scmd,'/')
+	fmt = '''Usage: %s [-h] [-b IVYBUS | --ivybus=IVYBUS] [-n APPNAME | --name=APPNAME] 
+where
+\t-h provides the usage message;
+\t-n APPNAME | --name=APPNAME  
+\t-b IVYBUS | --ivybus=IVYBUS allow to provide the IVYBUS string in the form
+\t adresse:port eg. 127.255.255.255:2010
+'''
+	print fmt   %  lpathitem[-1]
+
+def oncxproc(connected):
+	if connected == IvyApplicationDisconnected :
+		lprint("an IvyApplication was Disconnected")
+	else:
+		lprint("an IvyApplication was Connected")
+
+def ondieproc(id):
+	lprint("we ask me to die with id [%d]", id )
+
+class TopLevel(Tk) :
+	__single = 0
+	def __init__(self,appname = "TopLevel"):
+		if TopLevel.__single != 0 :
+			lprint("TopLevel is singleton")
+			sys.exit(1)
+		__single = 1
+		# the object is tk_root
+		Tk.__init__(self) 
+		self.appname = appname
+		self.title(self.appname)
+		# Frame contenant heure et bouton quit 
+		self.tkFheadpanel = Frame(self)
+		# Label hour
+		self.tkLhour =  Label(self.tkFheadpanel,text="hh:mm:ss")
+		self.tkLhour.pack(padx=4 , pady=4 , side = LEFT)
+		# dummy button
+## 		self.tkBdummy = Button(self.tkFheadpanel, 
+## 							  text="dummy",  bg='pink')
+## 		self.tkBdummy.pack(padx=4 , pady=4, side = RIGHT)
+		
+		# button quit
+		self.tkBquit = Button(self.tkFheadpanel, 
+							  text="QUIT",  bg='pink', command=self.quit)
+		self.tkBquit.pack(padx=4 , pady=4, side = RIGHT)
+		self.tkFheadpanel.pack(side=TOP)
+	
+		# Frame contenant un Label, un Text et un Scroller
+		self.tkFreceive_msg = Frame(self)
+		# label
+		self.tkLreceive_msg = Label(self.tkFreceive_msg, text="flyingonthebus")
+		self.tkLreceive_msg.pack(padx=4 , pady=4,
+								 side=TOP, fill = BOTH, expand = YES)
+		# Text
+		self.tkTreceive_msg = Text(self.tkFreceive_msg, height=26, width=50)
+		# Scrollbar
+		self.tkSBreceive_scroller = Scrollbar(
+			self.tkFreceive_msg,
+			command = self.tkTreceive_msg.yview)
+		self.tkTreceive_msg.configure(
+			yscrollcommand = self.tkSBreceive_scroller.set)
+
+		self.tkTreceive_msg.pack(padx=4 , pady=4,
+								 side=LEFT, fill = BOTH, expand = YES)
+		self.tkSBreceive_scroller.pack(side=RIGHT, fill = Y)
+		self.tkFreceive_msg.pack(side=BOTTOM, fill = BOTH, expand = YES)
+
+	def add_one_msg(self, smsg) :
+		self.tkTreceive_msg.insert(END, "%s\n" % smsg )
+
+	def onmsgproc(self,*arg) :
+		self.add_one_msg(string.join(arg,""))
+
+	def quit(self):
+		# cleanup action before detroying tk_root
+		lprint("doing IvyStop")
+		IvyStop()
+		lprint("doing destroy" )
+		self.destroy()
+		lprint("after destroy")
+		lprint("done.")
+
+## 	def ontick(self):
+## 		lprint("on tick method")
+## 		IvySendMsg("testtk_tick")
+## 		self.after(1000,self.ontick)
+
+# main prog
+if __name__ == '__main__':
+	# setting some main variable
+	sivybus = ""	
+
+	# getting option
+	try:
+		optlist, left_args = getopt.getopt(sys.argv[1:],'hb:n:', ['ivybus=','name'])
+	except getopt.GetoptError:
+		# print help information and exit:
+		usage(sys.argv[0])
+		sys.exit(2)
+	for o, a in optlist:
+		if o in ("-h", "--help"):
+			usage(sys.argv[0])
+			sys.exit()
+		elif o in ("-b", "--ivybus"):
+			sivybus = a
+		elif o in ("-n","--name"):
+			APPNAME = a 
+	if sivybus != "" :
+		sechoivybus = sivybus
+	elif os.environ.has_key("IVYBUS"):
+		sechoivybus = os.environ["IVYBUS"]
+	else:
+		sechoivybus = "ivydefault"
+	lprint("Ivy will broadcast on %s " , sechoivybus)
+
+	# initializing ivy : isreadymsg
+	sisreadymsg = "[%s is ready]" % APPNAME
+	IvyInit(APPNAME, sisreadymsg, 1 ,  oncxproc,  ondieproc )
+	IvyStart(sivybus)
+
+	# initializing top hmi part
+	mytoplevel = TopLevel("%s top window" % APPNAME)
+
+	# doing suited binding
+	IvyBindMsg(mytoplevel.onmsgproc , "(.*)")
+		
+	mytoplevel.mainloop()