<% 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 %>