vim splits

gistfile1.txt

                     I: location of cursor
     
                         initial state
                       +-------+-------+
                       |       |       |
                       +-------+       |
                       |   I   |       |
                       +-------+       |
                       |       |       |
                       +-------+-------+
 
  :topleft vsplit      :leftabove vsplit         :vsplit
+-----+-----+-----+   +-----------+-----+  +-----------+-----+
|     |     |     |   |           |     |  |           |     |
|     +-----+     |   +-----+-----+     |  +-----+-----|     |
|  I  |     |     |   |     |  I  |     |  |     |  I  |     |
|     +-----+     |   +-----+-----+     |  +-----+-----|     |
|     |     |     |   |           |     |  |           |     |
+-----+-----+-----+   +-----------+-----+  +-----------+-----+


window  horizontal  up      -->   :topleft    split
window  horizontal  down    -->   :botright   split
window  vertical    left    -->   :topleft    vsplit
window  vertical    right   -->   :botright   vsplit
buffer  horizontal  up      -->   :leftabove  split
buffer  horizontal  down    -->   :rightbelow split
buffer  vertical    left    -->   :leftabove  vsplit
buffer  vertical    right   -->   :rightbelow vsplit