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