function wait(message),
%-------------------------------------------------------
% University of Zaragoza
% Centro Politecnico Superior
% Robotics and Real Time Group
% Authors:  J. Neira, J. Tardos
% Date   :  7-2004
%-------------------------------------------------------
%-------------------------------------------------------

if nargin == 0
    message = 'Press RETURN to continue...';
end

disp(message);
pause;