Mention that field hashes are for inside-out objects

(this will be useful for perl5100delta.)

p4raw-id: //depot/perl@29160

diff --git a/pod/perl594delta.pod b/pod/perl594delta.pod
index 1133c78..a20f19d 100644 (file)
--- a/pod/perl594delta.pod
+++ b/pod/perl594delta.pod
@@ -122,6 +122,7 @@ D. Hedden)
 C<Hash::Util::FieldHash>, by Anno Siegel, has been added. This module
 provides support for I<field hashes>: hashes that maintain an association
 of a reference with a value, in a thread-safe garbage-collected way.
+Such hashes are useful to implement inside-out objects.
 
 =item *