UNIX for Advanced & Expert Users

To switch windows in vimdiff or 
 to navigate windows in vimdiff or 
 to change windows in vimdiff try the following: 
 The ":vertical" command can be inserted before another command that 
 splits a window. 
 
MOVING BETWEEN WINDOWS 
 
         CTRL-W h        move to the window on the left 
         CTRL-W j        move to the window below 
         CTRL-W k        move to the window above 
         CTRL-W l        move to the window on the right 
 
         CTRL-W t        move to the TOP window 
         CTRL-W b        move to the BOTTOM window 
 
  Moving windows 
 ===== 
 
         CTRL-W K        move window to the upper 
         CTRL-W H        move window to the far left 
         CTRL-W J        move window to the bottom 
         CTRL-W L        move window to the far right 
 
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I post this info because I has so much trouble finding it.