[tor-relays] TOR: Inbound, Outbound, Exit connections

*Good evening ladies and gentleman*

I'm running a TOR Exit for a few days now ( https://globe.torproject.org/#/relay/06BA80D9E1143CFAD835442142A3FA5A1E4FD91...). I'm also using TOR ARM in order to monitor TOR's performance, log messages and connections. When I have a look at the connections page on TOR ARM I read about «Inbound», «Outbound» or «Exit» connections. I searched the web already. But I wasn't able to find a site that explains in simple words what's the difference between «Inbound», «Outbound» or «Exit» connections.

Is there anybody who is able to tell me what «Inbound», «Outbound» or «Exit» connections are?

Greetings from Switzerland

Information Architect