View Source ExTDLib.Object.UpdateChatPosition (ExTDLib v0.0.4)

The position of a chat in a chat list has changed. An updateChatLastMessage or updateChatDraftMessage update might be sent instead of the update.

NameTypeDescription
chat_idstringChat identifier.
positionchatPositionNew chat position. If new order is 0, then the chat needs to be removed from the list.

More details on telegram's documentation.