__+C+_ _+CCCCCCCCCCCCCC
__CCCCCCCCCCCCCC+_ _+C+
__B_+CC_B_CCCCCCCCCCCCCC
__CCCCCCCCCCCCCCCC_B_+_B
__+CBC+_              
__              _+CC_B_+
__ _B_B_    +_+_+_++_++_+_+_++_+
__+_ _+_+_+_+_+_++_++_     _B_B_ 
__ _+C+_   _+_ _+++_+_+++++_+
__+++_ +_+_ + _+_+    _+_B_+_ 
__  _B_B_    _+_++ ++ ++  
__+ ++_+_ _+_++_+_+    _B_B_  
__  _B_B_    _+++_+_+_++_+_++_+
__+_+_+_+_++_+_+_ _+_     _B_B_  
__  _B_B_    _++_+_++++_ + _+
__ _+_ _+++_+ ++     _B_B_  
__ _+_B_+_    +  + + _+_+ +
__  _+_++ + +      _+C+_ 
__ _B_B_    __(c)1989 m.h.
__ westerweel__     _B_B_ 
__+_B_CC+_              
__              _+CBC+
__B_+_B_CCCCCCCCCCCCCCCC
__CCCCCCCCCCCCCC_B_CC+_B
__+C+_ _+CCCCCCCCCCCCCC
__CCCCCCCCCCCCCC+_ _+C+
__                   
__                   
__                 _+ 
__ __                 
__      +_+_         _  
__  _           _+__    
__    +_++_+       _+ __++
__++__ __       _+_____+_+___  
__   _   +_        _    
__    _     _+_____+_+_____+_+__
__  _+_  _ _+      _+ __++++
__++++__ __   __+_+_____+_+_____+
__  _  __ __ _       _      
__      _     __+_+_____+  
__ _+_ _ __+_      _+ __++++++
__++++++__ __     _+    
__ _ __+_        _        
__        _           
__           _        
__        _