User guide

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( ! ! 
5"       "
  +0$ 
   "    C
+ G,)GC(  ! C 
C C: 7!CCC8
       C0 +
     ! C 
C C:
)- +
/ 0 +       $
   $  =    
  $    0
+     $"  0
+     $   + 
  +     
-
:  C $ 7 $8  
@9 $ 7 $8   
   0 +
   $  $  $ 
   $"
6  
+-
 
  ! 6 