- Each of the boxes refers to a subnet.
- Most subnets contain several (in some cases hundreds) of CAs.
- There is connectivity between subnets.
- Following the tripartite theory, these subnets can be lumped into lexical, syntactic and semantic systems, with some subnets on the communication boundary.
- The parser is mostly about syntax, so the syntactic portion of the system is mostly complete, while the lexical and semantic systems are not.
