> grep -B2 -A5 -h 'X<qr>' /usr/share/perl/5.10/pod/*.pod
=head2 Quote and Quote-like Operators
X<operator, quote> X<operator, quote-like> X<q> X<qq> X<qx> X<qw> X<m>
X<qr> X<s> X<tr> X<'> X<''> X<"> X<""> X<//> X<`> X<``> X<<< << >>>
X<escape sequence> X<escape>


While we usually think of quotes as literal values, in Perl they
function as operators, providing various kinds of interpolating and
--

=item qr/STRING/msixpo
X<qr> X</i> X</m> X</o> X</s> X</x> X</p>

This operator quotes (and possibly compiles) its I<STRING> as a regular
expression.  I<STRING> is interpolated the same way as I<PATTERN>
in C<m/PATTERN/>.  If "'" is used as the delimiter, no interpolation
is done.  Returns a Perl value which may be used instead of the
--
=item Quote and Quote-like Operators
X<operator, quote> X<operator, quote-like> X<q> X<qq> X<qx> X<qw> X<m>
X<qr> X<s> X<tr> X<'> X<''> X<"> X<""> X<//> X<`> X<``> X<<< << >>>
X<escape sequence> X<escape>

=item Regexp Quote-Like Operators
X<operator, regexp>

qr/STRING/msixpo X<qr> X</i> X</m> X</o> X</s> X</x> X</p>,
m/PATTERN/msixpogc X<m> X<operator, match> X<regexp, options> X<regexp>
X<regex, options> X<regex> X</m> X</s> X</i> X</x> X</p> X</o> X</g> X</c>,
/PATTERN/msixpogc, ?PATTERN? X<?>, s/PATTERN/REPLACEMENT/msixpogce
X<substitute> X<substitution> X<replace> X<regexp, replace> X<regexp,
substitute> X</m> X</s> X</i> X</x> X</p> X</o> X</g> X</c> X</e>