Fixing inherited *date into sub-blocks

templates/svxfile.html

@@ -80,14 +80,16 @@ LOGMESSAGES
     -->
 {% endif %}
 </div>
-undergound survey length: {{svxlength|floatformat:2}} metres
-<span style="font-family: monospace;  font-size: 130%; ">
+underground survey length: {{svxlength|floatformat:2}} metres<br />
+
 {% for sb in svxblocks %}
+block:({{sb}}) has parent block:<a href="{{sb.parent.path}}">({{sb.parent}})</a>
 {% empty %} 
 Cannot find any <em>dated</em> survex blocks in this survex file (not looking at *include files). <br />
 Report this to a nerd if you think this is incorrect.
 <hr />
 {% endfor %}
+<span style="font-family: monospace;  font-size: 130%; ">
 
 {% for key, value in events.items %}
     {% with trips=value.0 svxothers=value.1 wallets=value.2 blocks=value.3 %}