Vertical and Horizontal Headers in a table?

Question

How would I get a table with both horizontal and vertical headers?

So e.g.

         header1 header2 header3 
header1    1        1      1
header2    2          


        

Answer 1

Like @UlrichSchwarz said, you can just use instead of in the first column. Using scope, you can make it more semantically descriptive:

  

    

    
header1
    
header2
    
header3
  
  

    
header 1
    
1
    
1
    
1
  
  

    
header 2
    
2
    
2
    
2
  
  

    
header 3
    
3
    
3
    
3