anchor.diff:  				<tr>
   					<th>Method</th>
   					<td>
  -					    <%= radio_button_tag :method, 0 %>
  +						<%= radio_button_tag :method, 0, required: true %>
   						<%= label_tag :method_0, :GET, value: 0 %>
  -					    <%= radio_button_tag :method, 1, checked: true %>
  -					    <%= label_tag :method_1, :POST, value: 1 %>
  +						<%= radio_button_tag :method, 1 %>
  +						<%= label_tag :method_1, :POST, value: 1 %>
   					</td>
   				</tr>
   
  
positive.code: 		<tr>
  			<th>Choose mode</th>
  			<td>
  				For each document, when there are existing annotations, the upload will
  				<ul>
  					<li><%= radio_button_tag :mode, :replace, checked: true %><%= label_tag :mode_replace,
  						'<span style="font-weight:bold">REPLACE</span> the existing ones,'.html_safe %></li>
  					<li><%= radio_button_tag :mode, :add %><%= label_tag :mode_add,
  						'<span style="font-weight:bold">ADD</span> the new annotations to the existing ones, or'.html_safe %></li>
  					<li><%= radio_button_tag :mode, :skip %><%= label_tag :mode_skip,
  						'be <span style="font-weight:bold">SKIP</span>ped.'.html_safe %></li>
  				</ul>
  
negative.code: 
  		   	<table>
  				<tr>
  					<th title="Specify a short (unique) identifier of the annotations to avoid confliction with other existing annotations." style="width:6em">Prefix</th>
  			   		<td style="text-align:center; width:17em">
  						<%= text_field_tag :prefix, nil, placeholder: "a short unique character string", size: 30 %>
  					</td>
  				</tr>
  
  