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