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