=head2 New C<qr//> operator
The C<qr//> operator, which is syntactically similar to the other quote-like
-operators, is used to create compiled regular expressions. This compiled
+operators, is used to create precompiled regular expressions. This compiled
form can now be explicitly passed around in variables, and interpolated in
-other regular expressions. See L<perlop> and L<perlre>.
+other regular expressions. See L<perlop>.
=head2 C<our> is now a reserved word
Several missing hooks have been added. There is also a new base class for
TIEARRAY implementations. See L<Tie::Array>.
+=head2 4th argument to substr
+
+substr() can now both return and replace in one operation. The optional
+4th argument is the replacement string. See L<perlfunc/substr>.
+
+=head2 Negative LENGTH argument to splice
+
+Splice() with a negative LENGTH argument now work similar to what the
+LENGTH did for substr(). Previously a negative LENGTH was treated as
+0. See L<perlfunc/splice>.
+
=head1 Supported Platforms