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