Documentation.

h2/src/docsrc/html/roadmap.html

@@ -558,6 +558,8 @@ See also <a href="build.html#providing_patches">Providing Patches</a>.
 </li><li>Outer joins: if no column of the outer join table is referenced, the outer join table could be removed from the query.
 </li><li>Cluster: allow using auto-increment and identity columns by ensuring executed in lock-step.
 </li><li>MySQL compatibility: index names only need to be unique for the given table.
+</li><li>Issue 352: constraints: distinguish between 'no action' and 'restrict'. Currently, only restrict is supported, 
+    and 'no action' is internally mapped to 'restrict'. The database meta data returns 'restrict' in all cases.
 </li></ul>
 
 <h2>Not Planned</h2>