diff --git a/src/doc/user/usermanual.html b/src/doc/user/usermanual.html
index 0e900e99..3c28f87c 100644
--- a/src/doc/user/usermanual.html
+++ b/src/doc/user/usermanual.html
@@ -2468,7 +2468,13 @@ metadatacmds = ; <em class=
           work with the good old <span class=
           "command"><strong>cron</strong></span>, and do not give
           access to all features of <span class=
-          "command"><strong>cron</strong></span> scheduling.</p>
+          "command"><strong>cron</strong></span> scheduling.
+          Entries created via the tool are marked with a
+          <code class="literal">RCLCRON_RCLINDEX=</code> marker so
+          that the tool knows which entries belong to it. As a side
+          effect, this sets an environment variable for the
+          process, but it's not actually used, this is just a
+          marker.</p>
           <p>The usual command to edit your <code class=
           "filename">crontab</code> is <span class=
           "command"><strong>crontab</strong></span> <code class=
@@ -8455,11 +8461,6 @@ for i in range(nres):
                 "filename">libaspell</code> which <span class=
                 "application">Recoll</span> is using.</p>
               </dd>
-              <dt><span class="term"><code class=
-              "varname">VARNAME</code></span></dt>
-              <dd>
-                <p>Blabla</p>
-              </dd>
             </dl>
           </div>
         </div>
diff --git a/src/doc/user/usermanual.xml b/src/doc/user/usermanual.xml
index ea068bc1..8201600d 100644
--- a/src/doc/user/usermanual.xml
+++ b/src/doc/user/usermanual.xml
@@ -1675,7 +1675,12 @@ metadatacmds = ; <replaceable>tags</replaceable> = tmsu tags %f
         </menuchoice> 
         menu. They only 
         work with the good old <command>cron</command>, and do not give
-        access to all features of <command>cron</command> scheduling.</para>
+        access to all features of <command>cron</command>
+        scheduling. Entries created via the tool are marked with
+        a <literal>RCLCRON_RCLINDEX=</literal> marker so that the tool
+        knows which entries belong to it. As a side effect, this sets an
+        environment variable for the process, but it's not actually used,
+        this is just a marker.</para> 
 
         <para>The usual command to edit your
         <filename>crontab</filename> is <command>crontab</command>
@@ -6547,11 +6552,6 @@ for i in range(nres):
             is using.</para></listitem>
           </varlistentry>
 
-          <varlistentry>
-            <term><varname>VARNAME</varname></term>
-            <listitem><para>Blabla</para></listitem>
-          </varlistentry>
-
         </variablelist>
 
       </sect2>