1) Hi, Nice to send some more explanations on a lot of ( sometimes missdocumented ) services, that's a pretty add-on over tons of websites just giving you man's pages. That's what sometimes busy sysadmins need, not the html-embeded man that we have, not the source code or website of a project nor end-user comments on forum, only a brief description of a not well known unknown service. A french linux admin of >5000 users, >500 servers. Thanks