Edit this page- why is it not working?

handbook/computing/todo.html

@@ -21,6 +21,7 @@ body {
 
 <!--   -------------------     Don't touch anything above this line --------------------------->
 
+
 <h2>How this works</h2>
 
 <p><b>Click twice on a sub-heading to reveal</b> the individual to-do items. Click again to hide.<br />
@@ -45,9 +46,8 @@ If a heading is in italics, then there are hidden items.
         <li><!--2020-03-26 psargent-->Explain how to link a new cave into the other caves in
         troggle filesystem
         <li><!--2020-03-26 psargent-->Explain how to add photos with the correct URL format to sub-HTML files attached to New Caves
-        
-
     </details>
+
     <details><summary><!--2020-04-13 psargent-->svx check</summary>
         <li>explain command line to run on newly typed survex file to check for format errors '$cavern xxxx.svx'
         <li>explain when to use svxtrace.py <a href="troggle/scriptscurrent.html">current scripts</a>