p4raw-id: //depot/perl@17147
=item *
+C<our> can now have an experimental optional attribute C<unique> that
+affects how global variables are shared among multiple interpreters,
+see L<perlfunc/our>.
+
+=item *
+
The following builtin functions are now overridable: each(), keys(),
pop(), push(), shift(), splice(), unshift(). [561]
our $VERSION : unique = "1.00";
Note that this attribute also has the effect of making the global
-readonly in the main interpreter after the first new interpreter
-has been cloned (for example, after the first new thread has been
-created).
+readonly after the first new interpreter has been cloned (for example,
+after the first new thread has been created).
Multi-interpreter environments can come to being either through the
fork() emulation on Windows platforms, or by embedding perl in a