Explicitly HTML-escaped: <% $expr |h %><p>
Explicitly HTML-escaped redundantly: <% $expr |hh %><p>
Explicitly URL-escaped: <% $expr |nu
%><p>
No flags: <% $expr %><p>
No flags again: <% $expr | %><p>
Explicitly not escaped: <% $expr | n%><p>
<%init>
my $expr = "<b><i>Hello there</i></b>.";
</%init>
