Indication of current section

[tmccombs]

Would it be possible to have some kind of hint showing which section of the document I'm currently viewing? for example, if I'm currently scrolled to the be_server_timeout documentation have a hint somewhere that tells me I am in section 7.3.3 "Fetching samples at layer 4"

[wlallemand]

I was also bothered with that and implemented it there #50