1. Hierarchical recognition with GNS
2. Configuration Variables
3. Performing the Hierarchical Recognition
4. Defining Recognition Rules and Actions
5. Extending GNS with Dynamic Libraries
6. Creating a User-Defined Dynamic Library API
7. API Functions Available
8. Creating a User-Defined Dynamic Library API
9. Error Messages

Chapter 9 Subsections

9. Error Messages
9. 1. Warning Messages
9. 2. Fatal Errors