Correct elems, keys, values, kv signatures.

Author: pmichaud

lib/List.pod

@@ -41,38 +41,38 @@ even as C<$@a>.
 
 =head3 elems
 
-    multi sub    elems(*@list)  returns Int:D
+    multi sub    elems($list)  returns Int:D
     multi method elems(List:D:) returns Int:D
 
-Returns the number of elements in the list
+Returns the number of elements in the list.
 
 =head3 end
 
-    multi sub    end(*@list)  returns Int:D
+    multi sub    end($list)  returns Int:D
     multi method end(List:D:) returns Int:D
 
-Returns the index of the last element
+Returns the index of the last element.
 
 =head3 keys
 
-    multi sub    keys(*@list)  returns List:D
+    multi sub    keys($list)  returns List:D
     multi method keys(List:D:) returns List:D
 
-Returns a list of indexes into the list
+Returns a list of indexes into the list (i.e., 0..(@list.elems-1)).
 
 =head3 values
 
-    multi sub    values(*@list)  returns List:D
+    multi sub    values($list)  returns List:D
     multi method values(List:D:) returns List:D
 
 Returns a copy of the list.
 
 =head3 kv
 
-    multi sub    kv(*@list)  returns List:D
+    multi sub    kv($list)  returns List:D
     multi method kv(List:D:) returns List:D
 
-Returns a list of indexes and values interleaved. For example
+Returns an interleaved list of indexes and values. For example
 
     <a b c>.kv