anchor.diff:  	 <option value="u" <% if model_visibility_letter ==  'u'%>selected="selected"<% end %>>you only</option>
          </select>
          <% else %>
  -       <%if model_group_id != 0 %>
  -       | Model group <%= @model.group.name %>
  +
  +	   <% if @model.group %>
  +	   | Model group <%= @model.group.name %>
  +	   <% end %>
  +
  +       | <%= model_visibility(@model) %> | <%= model_changeability(@model) %>
          <% end %>
  -       | <%= model_visibility(@model) %> | <%= model_changeability(@model) %>
  -       
  -       <% end %>
  -       
  +
          <% end %>
          
          
  
positive.code:     By <%= @model.people.map {|person| person_link(person)}.join(", ") -%> 
      <% model_visibility_letter = @model.visibility.short_form %>
      <% model_changeability_letter = @model.changeability.short_form %>
      <% if @model and @model.group %>
      <% model_group_id = @model.group.id %>
      <% else %>
      <% model_group_id = 0 %>
      <% end %>
  
      <% if @model.people.include?(@person) %>
      
  
negative.code:     <% @options_for_select = [['No group', nil]] -%>
      <% @person.groups.each {|g| @options_for_select << [g.name, g.id] } -%>
  						       
  						       | Model group <%= select_tag("group_id", options_for_select(@options_for_select, (@model.group ? @model.group.id : 0), :id => "group_select") %>
         <% end %>
         
         | Visible to <select name="read_permission" id="read_permission_select">
  