This chapter expands the hierarchy of system functions. It details the hierarchical structure of the system processes and their assigned tasks. The performance of system functions can be delegated to other system processes. This results in a system functions tree where system functions are indirectly connected by sub-system processes.

The chapter starts from (explicitly or implicitly) selected system processes. For each system process a tree structure of the system function is displayed with its name and comment. The tasks and performing system processes are also included in the tree.