More HashTables. Storing and retrieving values with open addressing.

There was also some discussion of the use of a second hash function to avoid storing an entire key in chess program transposition tables, the use of cryptographic hash functions to reduce large documents to small easily-recognized values, and the meaning---or, more precisely, the lack of meaning---of the traditional metasyntactic variables foo and bar. See http://www.faqs.org/rfcs/rfc3092.html for more on this last topic.