http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/user-manual/introduction.html
Introduction This documentation is included with the current stable version of Privoxy ,
4.0.0. 1.1. Features In addition to the core features of ad blocking and cookie management, Privoxy provides many supplemental
features, that give the end-user more control, more privacy and more freedom: Supports "Connection: keep-alive".