Additional Links

are addtitional links new?

[Namaste]

I am seeing additional links all over the place in SERPS. For example, results for Postgres give the following result:

PostgreSQL: The world's most advanced open source database - 2 Jun
Sophisticated open-source Object-Relational DBMS supporting almost all SQL constructs, including subselects, transactions, and user-defined types and ...
www.postgresql.org/ - 13k - 22 Aug 2005 - Cached - Similar pages
Download - Documentation - What's New in 8.0 - Techdocs
More results from www.postgresql.org »

The area in bold being additional links

Are these hand edited? How are they pinpointing these links so accurately?