Can anyone explain what the following means for the "link" column? on the "Peers" tab:

(1) An upward pointing arrow.
(2) A downward pointing arrow.
(3) What does "T" mean?
(4) What does "U" mean?
(5) What does a open brown padlock mean? (I think it means not connected.)
(6) What does a closed green padlock mean? (I think it means connected.)

Also please explain anything that I might have left out for this "Link" column.

Really it would be handy if there was a webpage that explained all these symbols and what they mean.

http://support.tixati.com/transfer%20properties%20-%20peers  explains many facets or the Transfers/Peers tab ... but I note the Link tab is missing from both the image and the content.

However, if you mouse-over a connection in the Link column you'll see the Up/Down arrows indicate incoming or outgoing connections, the T/U indicates TCP or UDP connections and the lock indicates whether or not the connection is encrypted.

(1) An upward pointing arrow. Sort Ascending.
(2) A downward pointing arrow. Sort Descending.
(3) What does "T" mean? TCP.
(4) What does "U" mean? UDP.
(5) What does a open brown padlock mean? (I think it means not connected.) A Non-encrypted torrent.
(6) What does a closed green padlock mean? (I think it means connected.) An Encrypted torrent.

just hover over it, tooltip explains icons

"(1) An upward pointing arrow. Sort Ascending.
(2) A downward pointing arrow. Sort Descending.
(3) What does "T" mean? TCP.
(4) What does "U" mean? UDP.
(5) What does a open brown padlock mean? (I think it means not connected.) A Non-encrypted torrent.
(6) What does a closed green padlock mean? (I think it means connected.) An Encrypted torrent."


To Clarify,

#1, An Up Arrow/Away from the Dot is an Outgoing connection.
#2, A Down Arrow/Towards the Dot is an incoming connection.
#5, It is a Non-encrypted connection to that peer.
#6, It is a Encrypted connection to that peer.