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.
(a) If a game was 'private' (meaning that no one could observe it), the eco category is not given in the history table.
| history | private |
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