Redmine/app/views/issues/_edit.rhtml

<% labelled_tabular_form_for :issue, @issue,
                             :url => {:action => 'edit', :id => @issue},
                             :html => {:id => 'issue-form',
                                       :multipart => true} do |f| %>
    <%= error_messages_for 'issue' %>
    <div class="box">
    <% if @edit_allowed || !@allowed_statuses.empty? %>
        <fieldset>
        <legend><%= l(:label_change_properties) %>
        <% if !@issue.new_record? && !@issue.errors.any? && @edit_allowed %>
        <small>(<%= link_to l(:label_more), {}, :onclick => 'Effect.toggle("issue_descr_fields", "appear", {duration:0.3}); return false;' %>)</small>
        <% end %>
        </legend>
        <%= render :partial => (@edit_allowed ? 'form' : 'form_update'), :locals => {:f => f} %>
        </fieldset>
    <% end %>
    
    <fieldset><legend><%= l(:field_notes) %></legend>
    <%= text_area_tag 'notes', @notes, :cols => 60, :rows => 10, :class => 'wiki-edit' %>
    <%= wikitoolbar_for 'notes' %>
    
    <p id="attachments_p"><label><%=l(:label_attachment_new)%>
    <%= image_to_function 'add.png', 'addFileField();return false;' %></label>
    <%= file_field_tag 'attachments[]', :size => 30  %> <em>(<%= l(:label_max_size) %>: <%= number_to_human_size(Setting.attachment_max_size.to_i.kilobytes) %>)</em></p>
    </fieldset>
    </div>
    
    <%= f.hidden_field :lock_version %>
    <%= submit_tag l(:button_submit) %>
    <%= link_to_remote l(:label_preview), 
                       { :url => { :controller => 'issues', :action => 'preview', :id => @issue },
                         :method => 'post',
                         :update => 'preview',
                         :with => 'Form.serialize("issue-form")',
                         :complete => "Element.scrollTo('preview')"
                       }, :accesskey => accesskey(:preview) %>
<% end %>

<div id="preview" class="wiki"></div>