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