# Features

These are bits of search-engine related code that are relatively isolated pieces of business logic,
that benefit from the clarity of being kept separate from the rest of the
search engine code.

* [domain-ranking](domain-ranking/) contains ranking algorithms.
* [query-parser](query-parser/) contains code for parsing the user-facing query grammar.

* [adblock](adblock/) 
* [pubdate](pubdate/)

* [screenshots](screenshots/) and [random-websites](random-websites/) contains SQL queries random
exploration mode.