=back
+=head2 Restricted Hashes
+
+A restricted hash is restricted to a certain set of keys, no keys
+outside the set can be added. Also individual keys can be restricted
+so that the key cannot be deleted and the value cannot be changed.
+No new syntax is involved: the Hash::Util module is the interface.
+
=head2 Safe Signals
Perl used to be fragile in that signals arriving at inopportune moments
=item *
C<Hash::Util> is the interface to the new I<restricted hashes>
-feature. A restricted hash is restricted to a certain set of keys,
-no keys outside the set can be added. Also individual keys can be
-restricted so that the key cannot be deleted and the value cannot be
-changed. (Implemented by Jeffrey Friedl, Nick Ing-Simmons, and
+feature. (Implemented by Jeffrey Friedl, Nick Ing-Simmons, and
Michael Schwern.)
=item *