[m-rev.] for review: impurity & higher-order

[Fergus Henderson]

I forgot to include the update to the NEWS file.

Index: NEWS
===================================================================
RCS file: /home/mercury1/repository/mercury/NEWS,v
retrieving revision 1.294
diff -u -d -u -r1.294 NEWS
--- NEWS	20 Jan 2003 16:34:24 -0000	1.294
+++ NEWS	24 Jan 2003 17:00:08 -0000
@@ -9,6 +9,7 @@
 * Field access syntax can now be used at the top-level in func and mode
   declarations and in the head of a clause for a user-defined field access
   function.
+* We now support impure higher-order code.
 
 Changes to the Mercury compiler:
 * Nothing yet.
@@ -42,6 +43,17 @@
   	:- func a ^ f(b) = c.
 	:- mode a ^ f(b) = c is <detism>.
 	A ^ f(B) = ...
+
+* Mercury's support for impure code now also includes support for
+  impure higher-order code.
+  
+  Specifically, impurity annotations can be used on higher-order types,
+  lambda expressions, and higher-order calls; higher-order terms are
+  permitted to call impure or semipure code provided that they are
+  appropriately annotated as such.
+
+  For details, see the "Higher-order impurity" section of the "Impurity"
+  chapter of the Mercury Language Reference Manual.
 
 Changes to the Mercury standard library:
 
-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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