SUPERVISION module
    Introduction to SUPERVISION
    Usage of SUPERVISION module
    Running SUPERVISION
    Editing graphs
       Creating a new graph
       Importing graphs from file
       Exporting graphs
       Copying graphs
       Inserting graphs
       Referencing graphs in the study
       Changing graph description
       Reloading dataflow
       Nodes in the graph
          About nodes
          Computation nodes
          Loop nodes
          Switch nodes
          GOTO nodes
          Adding nodes
          Directing dataflow between nodes
          Locating nodes in the window
          Deleting nodes
          Renaming nodes
          Changing node description
          Editing node function
          Adding node ports
       Linking nodes
       Changing view mode
    Initializing and executing graphs