Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!aplcen!haven!h.cs.wvu.wvnet.edu!cerc.wvu.wvnet.edu!cathedral!abmg
From: abmg@cathedral.cerc.wvu.wvnet.edu (Aliasghar Babadi)
Newsgroups: comp.windows.x
Subject: Extensions
Keywords: Extensions
Message-ID: <391@cerc.wvu.wvnet.edu.edu>
Date: 19 Feb 90 16:49:06 GMT
Sender: news@cerc.wvu.wvnet.edu
Lines: 3

Can someone give me more details on the steps required to write 
extentions, and if possible  simple examples which clarify the 
subject. Thanks.