Hopefully this makes things less confusing.

Index: include/apr_pools.h
===================================================================
RCS file: /home/cvs/apr/include/apr_pools.h,v
retrieving revision 1.103
diff -u -r1.103 apr_pools.h
--- include/apr_pools.h 11 Mar 2003 20:02:06 -0000      1.103
+++ include/apr_pools.h 25 Sep 2003 06:59:47 -0000
@@ -445,7 +445,7 @@
  * @return The parent of the given pool.
  */
 APR_DECLARE(apr_pool_t *) apr_pool_parent_get(apr_pool_t *pool);
-
+
 /** @deprecated @see apr_pool_parent_get */
 APR_DECLARE(apr_pool_t *) apr_pool_get_parent(apr_pool_t *pool);

@@ -483,7 +483,8 @@
  *      use for their data.  It is possible to accidentally overwrite
  *      data by choosing a key that another part of the program is using
  *      It is advised that steps are taken to ensure that a unique
- *      key is used at all times.
+ *      key is used at all times. This is of course inside one pool;
+ *      Two pools, or a pool and sub-pool can use identical keys.
  * @bug Specify how to ensure this uniqueness!
  */
 APR_DECLARE(apr_status_t) apr_pool_userdata_set(


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