Instant messagin (IM) is a teepe o online chat that offers real-time text transmission ower the Internet. A LAN messenger operates in a seemilar wey ower a local aurie network. Short messages are teepically transmittit bi-directionally atween twa pairties, when each uiser chuises tae complete a thocht an select "send". Some IM applications can uise push technology tae provide real-time text, which transmits messages chairacter bi chairacter, as thay are componed. Mair advanced instant messagin can add file transfer, clickable hyperlinks, Vyce ower IP, or video chat.