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