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@@ -4,6 +4,14 @@ perlthrtut - tutorial on threads in Perl
=head1 DESCRIPTION
+ WARNING: Threading is an experimental feature. Both the interface
+ and implementation are subject to change drastically. In fact, this
+ documentation describes the flavor of threads that was in version
+ 5.005. Perl 5.6.0 and later have the beginnings of support for
+ interpreter threads, which (when finished) is expected to be
+ significantly different from what is described here. The information
+ contained here may therefore soon be obsolete. Use at your own risk!
+
One of the most prominent new features of Perl 5.005 is the inclusion
of threads. Threads make a number of things a lot easier, and are a
very useful addition to your bag of programming tricks.