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