openproject/app/views/wiki/show.rhtml

<div class="contextual">
<%= link_to(l(:button_edit), {:action => 'edit', :page => @page.title}, :class => 'icon icon-edit') if @content.version == @page.content.version %>
<%= link_to(l(:button_rollback), {:action => 'edit', :page => @page.title, :version => @content.version }, :class => 'icon icon-cancel') if @content.version < @page.content.version %>
<%= link_to(l(:label_history), {:action => 'history', :page => @page.title}, :class => 'icon icon-history') %>
<%= link_to(l(:label_page_index), {:action => 'special', :page => 'Page_index'}, :class => 'icon icon-index') %>
</div>

<% if @content.version != @page.content.version %>
    <p>    
    <%= link_to(('&#171; ' + l(:label_previous)), :action => 'index', :page => @page.title, :version => (@content.version - 1)) + " - " if @content.version > 1 %>
    <%= "#{l(:label_version)} #{@content.version}/#{@page.content.version}"  %> - 
    <%= link_to((l(:label_next) + ' &#187;'), :action => 'index', :page => @page.title, :version => (@content.version + 1)) + " - " if @content.version < @page.content.version %>
    <%= link_to(l(:label_current_version), :action => 'index', :page => @page.title) %>
    <br />
    <em><%= @content.author ? @content.author.name : "anonyme" %>, <%= format_time(@content.updated_on) %> </em><br />
    <%=h @content.comments %>
    </p>
    <hr />
<% end %>

<div class="wiki">
<% cache "wiki/show/#{@page.id}/#{@content.version}" do %>
<%= textilizable @content.text %>
<% end %>
</div>

<div class="contextual">
<%= l(:label_export_to) %>
<%= link_to 'HTML', {:export => 'html', :version => @content.version}, :class => 'icon icon-html' %>,
<%= link_to 'TXT', {:export => 'txt', :version => @content.version}, :class => 'icon icon-txt' %>
</div>