matrixcol element

I was thinking that there should be a matrixcol element as well as a
matrixrow element.  matrix elements would contain one or more matrixrow
elements or one or more matrix col elements.  They could not be mixed.

This would be useful when the columns of the matrix are more important
than the rows of the matrix. 

Russell O'Connor                           roconnor@uwaterloo.ca
"And truth irreversibly destroys the meaning of its own message"
-- Anindita Dutta, "The Paradox of Truth, the Truth of Entropy"