The UNIX world is crippled because there are no easy-to-use user
interfaces. Well... in the last few years, a lot of text-based and
graphical-based, too, user interfaces has appeared. The only problem is that
they are written by programmers for programmers. So, the ordinary users
don't use UNIX because they think UNIX systems are hard to use. Of course,
the command line, the pipes, and so on, are very useful, but they does not
attract the ordinary users. These users needs intuitive, easy-to-use user
interfaces, so to simplify their work.
So, we should combine the power of UNIX with the easy-to-use property of
some user interfaces. This will allow the users to have both a powerful and
a real operating system and a easy-to-use user interface.
Xterminal is a user interface. A text-based one.
Why a text-based user interface? The text-based user interfaces are very
useful for applications that runs on non-graphic-capable terminals, and for
utilities that just don't need a graphical interface.
During the last few years, object oriented programming have become very
popular. That's because of a lot of advantages which helps the development
of today's projects, that are becoming more and more complex. It makes the
applications to split into several modules, so the developer of a module
don't need to have knowledge of the other's implementation details.
Last but not last, the object orientation is a very natural paradigm. In
the real world, day by day, we are dealing with Objects. Everywere around us
are objects, which are interconnected, and which are communicating using
The client-server architecture is a very popular paradigm, too, nowadays.
That's because of it's natural design, of course. Now, for example, I am
speaking, so I'm a server, and you are listening to me, so you are clients.
And we are communicating using messages.
The message communication is very important, generally in client-server
designed applications, and particulary in Xterminal.