explain.depesz.com/templates/controller/info.html.ep

% layout 'default';

% my $title = 'System information';
% title $title;

<h1><%= $title =%></h1>

<ul>
    <li>Perl version: <%= $perl->{'version'} %></li>
    <li>Perl binary: <%= $perl->{'binary'} %></li>
    <li>App home: <%= app()->home() %>
    <li>Loaded modules:
    <ul>
% for my $item ( @{ $modules } ) {
        <li><%= $item->{'module'} %>
% if ( $item->{'version'} ) {
        version <%= $item->{'version'} %>
% }
        </li>
% }
    </ul>
    </li>
</ul>