Contents of unit 1
Unit 1 : Background
1.1.  High level languages
1.2.  Compilation versus interpretation
1.3.  A brief history of C++
1.4.  A minimal C++ program
1.5.  Creating, compiling and running your program
1.5.1.  Creating the program
1.5.2.  Compilation
1.5.3.  Running the program
1.6.  The Ceilidh- system, and the special command "pr1"
1.7.  General