tweak cgi html form with TODOs

src/cgi/form.html

@@ -399,8 +399,14 @@
 
           <h3>Tabular Input</h3>
             You can enter tables of preferences directly in the first tab of the form above.
+            
+            TODO
           
           <h4>Example:</h4>
+            Suppose we want to figure out a Grad TA-to-Class assignment. Graduate students will be our "Applicants" 
+            - each one will be assigned a class to TA -, and classes will be our "Reviewers" - taking a quota of needed TAs.
+            
+            TODO
 
           <h3>File Upload</h3>
             
@@ -410,8 +416,12 @@
             Two file formats are supported, Excel and CSV:
             
           <h4>Excel</h4>
+            
+            TODO
 
           <h4>CSV</h4>
+            
+            TODO
 
         </details>
         </div>