This page describes the syntax of regular expressions in Perl.
-If you haven't used regular expressions before, a quick-start
-introduction is available in L<perlrequick>, and a longer tutorial
-introduction is available in L<perlretut>.
-
-For reference on how regular expressions are used in matching
-operations, plus various examples of the same, see discussions of
-C<m//>, C<s///>, C<qr//> and C<"??"> in L<perlop/"Regexp Quote-Like
-Operators">.
+If you haven't used regular expressions before, a tutorial introduction
+is available in L<perlretut>. If you know just a little about them,
+a quick-start introduction is available in L<perlrequick>.
+
+This page assumes you are familiar with regular expression basics, like
+what is a "pattern", what does it look like, and how is it basically used.
+For a reference on how they are used, plus various examples of the same,
+see discussions of C<m//>, C<s///>, C<qr//> and C<"??"> in
+L<perlop/"Regexp Quote-Like Operators">.
New in v5.22, L<C<use re 'strict'>|re/'strict' mode> applies stricter
rules than otherwise when compiling regular expression patterns. It can
=head1 The Guide
+This page assumes you already know things, like what a "pattern" is, and
+the basic syntax of using them. If you don't, see L<perlretut>.
+
=head2 Simple word matching
The simplest regex is simply a word, or more generally, a string of