=head1 VERSION
-This document describes Mouse version 0.42
+This document describes Mouse version 0.70
=head1 DESCRIPTION
Mouse has an optional XS implementation, which is automatically built
-and used if available.
+and used if available. According to benchmarks, this is about 2 times
+faster than Mouse::PurePerl.
=head2 INSTALL
perl Makefile.PL --pp
-=head2 The MOUSE_PUREPERL environment variable
+=head2 The MOUSE_PUREPERL (or PERL_ONLY) environment variable
-It can be used to enable the use of Mouse::PurePerl.
+It can be used to enable the use of Mouse::PurePerl in order to test
+and debug programs that use Mouse.
=head1 DEPENDENCIES