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