zApp-is  computer  language, which  has  been 
 made  for creating high  front  end  application  for
 displaying  and  manipulating  real-time  financial 
information.   It  includes  the  following goals.

     -zApp  should  allow application  portability  to  
other  GUI  platforms;

      -programs written  with  zApp  should 
be at least as efficient as application written
in strait C and' because they  reuse well-tested 
code, should be more reliable,

      -zApp should allow the creation of GUI
application with much less code, and in much
less time,

      -zApp should allow the use of third party tools, such as
dialog editors and custom controls, 

      -zApp should provide higher level features than most
normal GUIs (and the Window API in particular) while 
allowing the program to utilize all of the GUI system's
features,

       -zap should be integrate into existing windowing 
system applications written in C. The zApp programmer should 
be able to use zApp without having to rewrite all of existing 
code!

         This language is a C++  class library, so it references
to C++ concepts and terminology.
              
               zApp language has the following basic concerts:

      -inheritance-much of your program's functionality will 
be provided by new classes you create that inherit from classes
zApp provides'

      -overriding virtual functions-In the classes which you 
create you will be overriding many virtual functions,
particularly for handing events.