diff --git a/Shorewall-lite/manpages/shorewall-lite.xml b/Shorewall-lite/manpages/shorewall-lite.xml
index a51c206c0..c0a70725a 100644
--- a/Shorewall-lite/manpages/shorewall-lite.xml
+++ b/Shorewall-lite/manpages/shorewall-lite.xml
@@ -1585,6 +1585,34 @@
     started.</para>
   </refsect1>
 
+  <refsect1>
+    <title>ENVIRONMENT</title>
+
+    <para>Two environmental variables are recognized by Shorewall-lite:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term>SHOREWALL_INIT_SCRIPT</term>
+
+        <listitem>
+          <para>When set to 1, causes Std out to be redirected to the file
+          specified in the STARTUP_LOG option in <ulink
+          url="shorewall.conf.html">shorewall.conf(5)</ulink>.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>SW_LOGGERTAG</term>
+
+        <listitem>
+          <para>Added in Shorewall 5.0.8. When set to a non-empty value, that
+          value is passed to the logger utility in its -t (--tag)
+          option.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>FILES</title>
 
diff --git a/Shorewall/manpages/shorewall.xml b/Shorewall/manpages/shorewall.xml
index 613985f78..c69b954d0 100644
--- a/Shorewall/manpages/shorewall.xml
+++ b/Shorewall/manpages/shorewall.xml
@@ -2625,6 +2625,34 @@
     started.</para>
   </refsect1>
 
+  <refsect1>
+    <title>ENVIRONMENT</title>
+
+    <para>Two environmental variables are recognized by Shorewall:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term>SHOREWALL_INIT_SCRIPT</term>
+
+        <listitem>
+          <para>When set to 1, causes Std out to be redirected to the file
+          specified in the STARTUP_LOG option in <ulink
+          url="shorewall.conf.html">shorewall.conf(5)</ulink>.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>SW_LOGGERTAG</term>
+
+        <listitem>
+          <para>Added in Shorewall 5.0.8. When set to a non-empty value, that
+          value is passed to the logger utility in its -t (--tag)
+          option.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>FILES</title>
 
diff --git a/Shorewall6-lite/manpages/shorewall6-lite.xml b/Shorewall6-lite/manpages/shorewall6-lite.xml
index 18df72b57..96dad0cdc 100644
--- a/Shorewall6-lite/manpages/shorewall6-lite.xml
+++ b/Shorewall6-lite/manpages/shorewall6-lite.xml
@@ -1547,6 +1547,35 @@
     started.</para>
   </refsect1>
 
+  <refsect1>
+    <title>ENVIRONMENT</title>
+
+    <para>Two environmental variables are recognized by
+    Shorewall6-lite:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term>SHOREWALL_INIT_SCRIPT</term>
+
+        <listitem>
+          <para>When set to 1, causes Std out to be redirected to the file
+          specified in the STARTUP_LOG option in <ulink
+          url="shorewall6.conf.html">shorewall6.conf(5)</ulink>.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>SW_LOGGERTAG</term>
+
+        <listitem>
+          <para>Added in Shorewall 5.0.8. When set to a non-empty value, that
+          value is passed to the logger utility in its -t (--tag)
+          option.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>See ALSO</title>
 
diff --git a/Shorewall6/manpages/shorewall6.xml b/Shorewall6/manpages/shorewall6.xml
index e92d89fb7..ae824800c 100644
--- a/Shorewall6/manpages/shorewall6.xml
+++ b/Shorewall6/manpages/shorewall6.xml
@@ -2501,6 +2501,34 @@
     started.</para>
   </refsect1>
 
+  <refsect1>
+    <title>ENVIRONMENT</title>
+
+    <para>Two environmental variables are recognized by Shorewall6:</para>
+
+    <variablelist>
+      <varlistentry>
+        <term>SHOREWALL_INIT_SCRIPT</term>
+
+        <listitem>
+          <para>When set to 1, causes Std out to be redirected to the file
+          specified in the STARTUP_LOG option in <ulink
+          url="shorewall6.conf.html">shorewall6.conf(5)</ulink>.</para>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>SW_LOGGERTAG</term>
+
+        <listitem>
+          <para>Added in Shorewall 5.0.8. When set to a non-empty value, that
+          value is passed to the logger utility in its -t (--tag)
+          option.</para>
+        </listitem>
+      </varlistentry>
+    </variablelist>
+  </refsect1>
+
   <refsect1>
     <title>See ALSO</title>