···

       
98
       
98
       
 
       
          "closest_bookmark(to)" = "heads(::to & bookmarks())";

     

       
99
       
99
       
 
       
          "p(n)" = "p(@, n)";

     

       
100
       
100
       
 
       
          "p(r, n)" = "roots(r | ancestors(r-, n))";

     

       
101
       
101
       
+
       
          "tail()" = "tail(@)";

     

       
102
       
102
       
+
       
          "tail(h)" = "roots(trunk()..h)";

     

       
101
       
103
       
 
       
        };

     

       
102
       
104
       
 
       


     

       
103
       
105
       
 
       
        aliases = {