=head1 DESCRIPTION
This document describes differences between the 5.9.0 and the 5.9.1
-developement releases. See L<perl590delta> for the differences between
+development releases. See L<perl590delta> for the differences between
5.8.0 and 5.9.0.
=head1 Incompatible Changes
The lvalues returned by the three argument form of substr() used to be a
"fixed length window" on the original string. In some cases this could
cause surprising action at distance or other undefined behaviour. Now the
-length of the window adjusts iself to the length of the string assigned to
+length of the window adjusts itself to the length of the string assigned to
it.
=head2 The C<:unique> attribute is only meaningful for globals