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