C< $foo<bar> >
C<< $foo<<bar>> >>
C«$foo < $bar»
C<<$foo < $bar>>
The Perl 5 heredoc syntax was: C« <<END_MARKER »
The Perl 5 heredoc syntax was: C<<< <<END_MARKER >>>
C< $foo<bar> >
C<< $foo<<bar>> >>
C«$foo < $bar»
C<<$foo < $bar>>
The Perl 5 heredoc syntax was: C« <<END_MARKER »
The Perl 5 heredoc syntax was: C<<< <<END_MARKER >>>