This command displays the category of the opening being played in the game requested, whether a game being played or examined.
|eco||gives information about the game you are playing|
|eco 2||gives information about game 2|
|eco hawk||gives information about the game hawk is playing|
The display includes several kinds of information about the opening being played in the game:
|ECO[ ##]||Encyclopedia of Chess Openings classification|
|NIC[ ##]||New In Chess classification|
|LONG[ ##]||Name of opening|
The number in the  is the ## halfmoves used for classifying this game's opening according to the data base being used.
ECO information is also given in a user's "history" display.
See also: history