% content_for "optionals" do %>
Tags
<% if @all_tags %>
<% @all_tags.each do |tag| %>
<%= link_to tag, :controller => 'trace', :action => @paging_action, :tag => tag %>
<% end %>
<% end %>
User
It's an optional box!!
<% if @user %>
<%= "
...and you're logged in!
" %>
<% end %>
<% end %>