In log files what is the meaning of: s c sc cs?

Like here on TechNet - under the "Appears As" column - c-ip, cs-uri-query, etc.

(I got a log file where the columns are described that way but I don't understand those prefix letters.)

Solution

c: client (e.g. c-ip, the IP address of the client)
s: server (e.g. s-ip, the IP address of the server)
cs: from client to server (e.g. cs-bytes, the number of bytes sent to the server)
sc: from server to client (e.g. sc-bytes, the number of bytes sent to the client)