% my $x;
Hello Mr. <% $x %>!
% # another line
% sub stuff { 1 }
% do { stuff() };
% my %h;
Hello, <% $h{not_defined} %>!
And, then end.
% my $x;
Hello Mr. <% $x %>!
% # another line
% sub stuff { 1 }
% do { stuff() };
% my %h;
Hello, <% $h{not_defined} %>!
And, then end.