update 'generate next' info in serials

en/manual.xml

@@ -23251,6 +23251,25 @@ location: [STAFF, ISO]</programlisting>Will block items with an itype code of
           <para>Once you have entered your info you can click 'Save'</para>
         </listitem>
       </itemizedlist>
+
+      <para>If you are receiving multiple issues at once, or have marked an
+      issue as 'Late' or 'Missing' there you can click the 'Generate Next'
+      button below the list of issues.</para>
+
+      <screenshot>
+        <screeninfo>Generate Next Button</screeninfo>
+
+        <mediaobject>
+          <imageobject>
+            <imagedata fileref="images/serials/editissue.png" />
+          </imageobject>
+        </mediaobject>
+      </screenshot>
+
+      <para>Clicking this button will generate the next issue for you and mark
+      the previously expected issue as 'Late' automatically. You can then
+      check the 'Edit' box to the right of each issue and edit the status on
+      multiple issues at once.</para>
     </section>
 
     <section id="routinglist">
@@ -23557,7 +23576,7 @@ location: [STAFF, ISO]</programlisting>Will block items with an itype code of
 
           <para>to the <link linkend="IntranetUserCSS">IntranetUserCSS</link>
           preference.</para>
-        </tip> </para>
+        </tip></para>
     </section>
 
     <section id="acqvendors">