> Only a small plea: could you please add an alias ‘(direction . bottom)’
 > as a shorthand for ‘(direction . below) (window . main)’
 >
 > Similarly:
 > top = (direction . above) (window . main)
 > bottom = (direction . below) (window . main)
 > leftmost = (direction . left) (window . main)
 > rightmost = (direction . right) (window . main)

Patch attached.  But notice that these semantically clash with what you
earlier wanted for 'split-window':

		    ((eq side 'above) 'top)
		    ((eq side 'below) 'bottom)
		
martin