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