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