Scoreboard

The configuration "scoreboard" is responsible for monitoring progress
in the configuration of a particular graph node.  The scoreboard shows
the following information:

     * pipe, port and field data:  the scoreboard displays one icon for
                  each input pipe, input port, output port and output
                  record field defined for the given module.

                  Further information about each entity, such as trait
                  information, can be obtained by clicking on the icons.


     * bindings.  Bindings can be between input pipes and input ports,
                  or between input pipes and output record fields, or
                  between output ports and output record fields.
                
                  Bindings are shown by color-matching the icons that
                  correspond to two specific entities bound to each
                  other.

     * field extractions:  The scoreboard keeps track of the list of
                  records and fields available to each entity.  When
                  a field extraction is made or cleared, the
                  record/field lists are updated to show which
                  extractions are in effect.

                  Record and field information for a given entity is
                  obtained by clicking on its icon.

  
     
