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