talk was a program originally used for live text communication between different users of a single multi-user computer running the Unix operating system. All of these programs split the interface into different sections for each participant. The interfaces did not convey the order in which statements typed by different participants would be reassembled into a log of the conversation. Also, all three programs transmitted each character as it was typed, lending a more immediate feel to the discussion than recent instant messaging clients or IRC. Users more familiar with other forms of instant text communication would sometimes find themselves in embarrassing situations by typing something and deciding to withdraw the statement, unaware that other participants of the conversation had seen it all happen in real time.