Headers in 
% foreach my $key (grep { defined($r->headers_in->{$_}) } sort keys %{$r->headers_in}) {
- <% $key %>: <% $r->headers_in->{$key} |h%>
% }
 Headers out 
% foreach my $key (sort keys %{$r->headers_out}) {
- <% $key %>: <% $r->headers_out->{$key} |h%>
% }
 Headers out (error responses) 
% foreach my $key (sort keys %{$r->err_headers_out}) {
- <% $key %>: <% $r->err_headers_out->{$key} |h%>
% }
 Request notes 
% foreach my $key (sort keys %{$r->notes}) {
- <% $key %>: <% $r->notes->{$key} |h%>
% }
 Subprocess environment 
% foreach my $key (sort keys %{$r->subprocess_env}) {
- <% $key %>: <% $r->subprocess_env->{$key} |h%>
% }
<%attr>
title => "HTTP headers in/out, Request notes, Environment"
%attr>