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