function CEL_OnInstrumentSubscribed(Source, EventID, symbl, Instrument, varargin)

try
    % Informing about subscription of given contract and presenting its
    % fullname.
    disp([symbl, ' is subscribed. Fullname: ', Instrument.get('FullName')]);
catch
    CEL_ShutDown;
    disp('An error occurred in CEL_OnInstrumentSubscribed.m file.');
end