F 
 1.0000000000000000
    18.0000000000000000    0.0000000000000000    0.0000000000000000
     0.0000000000000000   18.0000000000000000    0.0000000000000000
     0.0000000000000000    0.0000000000000000   18.0000000000000000
 F  
   1
Direct
  0.5000000000000000  0.5000000000000000  0.5000000000000000
