Clarify mod_perl1 vs mod_perl2 vs mod_perl 1.99

diff --git a/lib/Catalyst/Upgrading.pod b/lib/Catalyst/Upgrading.pod
index f15995e..4fec7d3 100644 (file)
--- a/lib/Catalyst/Upgrading.pod
+++ b/lib/Catalyst/Upgrading.pod
@@ -39,13 +39,15 @@ enough to use L<Catalyst::Script::FastCGI>.
 =head2 Upgrading the mod_perl / Apache Engines
 
 The engines that are build upon the various iterations of mod_perl,
-L<Catalyst::Engine::Apache::MP13> and
-L<Catalyst::Engine::Apache2::MP20> should be seamless upgrades and will
-work using using L<Plack::Handler::Apache1> or L<Plack::Handler::Apache2>
-as required.  
+L<Catalyst::Engine::Apache::MP13> (for mod_perl 1, and Apache 1.x) and
+L<Catalyst::Engine::Apache2::MP20> (for mod_perl 2, and Apache 2.x)
+should be seamless upgrades and will work using using L<Plack::Handler::Apache1>
+or L<Plack::Handler::Apache2> as required.
 
 L<Catalyst::Engine::Apache2::MP19>, is however no longer supported, as Plack
-does not support mod_perl version 1.99
+does not support mod_perl version 1.99. This is unlikely to be a problem
+for anyone, as 1.99 was a brief beta-test release for mod_perl 2, and any users
+are encouraged to upgrade to a supported release of Apache 2 and mod_perl 2.
 
 =head2 Upgrading the HTTP Engine