diff -r 61fd5c1d733f -r 8b65444edbb0 TFL/post.sml
--- a/TFL/post.sml	Wed May 27 12:19:35 1998 +0200
+++ b/TFL/post.sml	Wed May 27 12:21:39 1998 +0200
@@ -84,7 +84,7 @@
  * Defining a function with an associated termination relation. 
  *---------------------------------------------------------------------------*)
 fun define_i thy fid R eqs = 
-  let val dummy = Theory.require thy "WF_Rel" "recursive function definitions"
+  let val dummy = Theory.requires thy "WF_Rel" "recursive function definitions"
       val {functional,pats} = Prim.mk_functional thy eqs
   in (Prim.wfrec_definition0 thy fid R functional, pats)
   end;