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