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