.--..--..--..--..--..--.
    .' \  (`._   (_)     _   \
  .'    |  '._)         (_)  |
  \ _.')\      .----..---.   /
  |(_.'  |    /    .-\-.  \  |
  \     0|    |   ( O| O) | o|
   |  _  |  .--.____.'._.-.  |
   \ (_) | o         -` .-`  |
    |    \   |`-._ _ _ _ _\ /
    \    |   |  `. |_||_|   |
    | o  |    \_      \     |     -.   .-.
    |.-.  \     `--..-'   O |     `.`-' .'
  _.'  .' |     `-.-'      /-.__   ' .-'
.' `-.` '.|='=.='=.='=.='=|._/_ `-'.'
`-._  `.  |________/\_____|    `-.'
   .'   ).| '=' '='\/ '=' |
   `._.`  '---------------'
           //___\   //___\
             ||       ||
             ||_.-.   ||_.-.
            (_.--__) (_.--__)

   
   
  User code  ^               ^ OS code
              \             /
               \        .--'
                \      /
  User code  <--- Mode ----> OS code
                /      \
            .--'        \___
           /                \
          v                  v 
       User code            OS code

               |      |     |      |        |      |
               v      v     |      v        |      v
             .------------. | .-----------. |  .-----.
             | Filesystem | | | Scheduler | |  | MMU |
             '------------' | '-----------' |  '-----'
                    |       |      |        |
                    v       |      |        v
                 .----.     |      |    .---------.
                 | IO |<----'      |    | Network |
                 '----'            |    '---------'
                    |              |         |
                    v              v         v
             .---------------------------------------.
             |                  HAL                  |
             '---------------------------------------'
             


                                        .--> Base::Class::Derived_A
                                       /
                                      .----> Base::Class::Derived_B    
      Something -------.             /         \
                        \           /           .---> Base::Class::Derived
      Something::else    \         /             \
            \             \       /               '--> Base::Class::Derived
             \             \     /
              \             \   .-----------> Base::Class::Derived_C 
               \             \ /
                '------ Base::Class
                       /  \ \ \
                      '    \ \ \  
                      |     \ \ \
                      .      \ \ '--- The::Latest
                     /|       \ \      \
 With::Some::fantasy  '        \ \      '---- The::Latest::Greatest
                     /|         \ \
         More::Stuff  '          \ '- I::Am::Running::Out::Of::Ideas
                     /|           \
         More::Stuff  '            \
                     /              '--- Last::One
       More::Stuff  V