rules for travel      
             (esp. biking)            
                                        
                                          
                  one                   
          "detour before retour"          
 if not necessary,  you should never find 
 yourself  on the  same  part of  a  road 
                  twice.                  
                                          
                  two                   
            "the kalmar rule"             
 you get  one  glance at  google map  per 
 person  and evening.  you can  not  show 
 your  map   search   to   anybody  else. 
                                          
                     
 "rules are meant  to  make  you think  a 
 bit   before   breaking   them"   -   t. 
         pratchett (paraphrased)          
                                          
                     
           see also: a nice path