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