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