Run make to compile.  To start the server, execute ./src/server/ncServer from the terminal.  Start the client by
executing ./src/client/ncClient from the terminal.

The Makefile and files it includes are all very primitive.  I would like to set up a system that uses autotools, but I
don't know how to use them yet.

Some documentation can be found in the docs directory.  The latest addition is the Dia-based schematic in
docs/designElements/nchat.dia.  It includes only the elements implemented so far.  And it's likely going to be subjected
to significant changes.  In particular, it may turn out to be too complicated to keep a vector of all users in shared
memory, in which case shared memory will be reserved for exchange of messages between server processes, while the vector
of users will be kept on the distributor process that will communicate with client-dedicated processes and exchange user
information with them when needed.

I didn't look up UML conventions yet, so I may be making mistakes in how I represent some of the dependencies.  I show
the inheritance as an arrow that leads from an inherited class to the base class.  But for composition, I used a line
that ends with a diamond (this is also when a class contains a pointer or a reference to an object of another class).

I'm not sure if the diagram looks too crowded now.  Perhaps I should simplify it by focusing on these three types of
processes on the server side, their inter-process communication through shared memory, and the communication between one
of them and the client through internet sockets.