function keyinfo
%% KEYINFO catch all the keyboard infomation 
% The function requires no input arguments and return a value in terms of
% a column vector [3 x 1]
%
% Finally, I wish you will enjoy this tiny function, and any comment is
% appreciated
%
% Name: Fu-Sung Wang  
% E-mail: fusung.wang@gmail.com 
% Organization: www.terasoft.com.tw 