OpenOffice Equations Don't Completely Suck

I was pleasantly surprised by the equation editor in OpenOffice. At first, I thought I was in some sort of menu hell, but after I got the first couple of items in place, I was able to hack rat-free. Yea! It's even a little TeXy:

left [ stack{x # y # z} right ] =
   left [ stack{dx # dy # dz} right ] 
 + left [ stack{1+s # rz # -ry} 
          stack{-rz # 1+s # rx} 
          stack{ry # -rx # 1+s} right ]
   left [ stack{x' # y' # z'} right ]