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    %% Get Information About FITS File  
% Use |fitsinfo| to obtain information about the FITS file |tst0012.fits|.
% The returned structure contains |Filename|, |FileModDate|, |FileSize|,
% |Contents|, and |PrimaryData|. In addition to its primary data, the file
% also contains an example of the extensions |BinaryTable|, |Unknown|,
% |Image|, and |AsciiTable|.

%%  
S = fitsinfo('tst0012.fits');

%% 
% View the |PrimaryData| field. 
S.PrimaryData 

%%
% The |PrimaryData| field describes the data in the file. For example, the
% |Size| field indicates the data is a 109-by-102 matrix.  

%% 
% View the |AsciiTable| field. 
S.AsciiTable 

%%
% The |AsciiTable| field describes the |AsciiTable| extension. For example,
% using the |FieldWidth| and |FieldPos| fields you can determine the length
% and location of each field within a row.