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