Lab 8 Marking Scheme
   - Showing it to lab supervisor
 
   - Get the sample cars file running in Caspian
 
   - Add the number_in_family field to the case definition and
       the cases
 
   - Add the new case
 
   - Add the range to modify case retrieval
 
   - Modify the weight
 
   - Formally describe the Caspian retrieval mechanism
 
   - Explain retrieval in terms of search space
 
   - Add case manipulation
 
   - Describe a domain that would be good for a CBR system
       but not for Caspian