===================================================================
RCS file: /home/cvs/OpenXM/src/kan96xx/Kan/usage.sm1,v
retrieving revision 1.5
retrieving revision 1.9
diff -u -p -r1.5 -r1.9
--- OpenXM/src/kan96xx/Kan/usage.sm1	2002/09/08 10:49:50	1.5
+++ OpenXM/src/kan96xx/Kan/usage.sm1	2004/09/11 01:00:42	1.9
@@ -1,4 +1,4 @@
-%% $OpenXM: OpenXM/src/kan96xx/Kan/usage.sm1,v 1.4 2002/02/09 06:21:02 takayama Exp $
+%% $OpenXM: OpenXM/src/kan96xx/Kan/usage.sm1,v 1.8 2004/09/10 22:21:27 takayama Exp $
 %% usage.sm1
 %%  [(key word)
 %%    [(   )
@@ -110,6 +110,9 @@
    (   [x,y,Dx,Dy] = [0,0,1,1] ) 
    (Example: [(x,y) ring_of_differential_operators 0 [(weightedHomogenization) 1]])
    (          define_ring )
+   (Example: [(x,y) ring_of_differential_operators [[(x) -1 (Dx) 1]] weight_vector)
+   (          0 [(degreeShift) [[1 0 1]]] ])
+   (          define_ring )
    (Example: [(x,y,z) ring_of_differential_operators (Dx,Dy) elimination_order 0] define_ring)
    (         Dx,Dy, and Dz are corresponding differential operators to the )
    (         space variables x, y and z.)
@@ -182,7 +185,7 @@
    (    <<ring_of_???>> ring_of_polynomials, ring_of_differential_operators, )
    (    ring_of_difference_operators)
    (    <<order>> elimination_order, weight_vector)
-   (    ring_def,ring , << ,, >>)
+   (    ring_def,ring , << __ >>)
   ]
 ] putUsages
 
@@ -270,6 +273,9 @@ def
 [(join) 
  [(list1 list2 join list3)
   (Ex.  [1 2] [3 [4 (ab)]] join  [1 2 3 [4 (ab)]])
+  (Note: Join should use for arrays. It works for list too,)
+  (      but it does not copy cells. cf. cons)
+  (      So, it might generate looped lists or destroy other lists.)
  ]
 ] putUsages