diff --git a/man/systemd.mount.xml b/man/systemd.mount.xml
index 635fba3b95..a186bf89a1 100644
--- a/man/systemd.mount.xml
+++ b/man/systemd.mount.xml
@@ -69,7 +69,10 @@
                 in the [Mount] section.</para>
 
                 <para>Additional options are listed in
-                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+                which define the execution environment the
+                <citerefentry><refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>
+                binary is executed in.</para>
 
                 <para>Mount units must be named after the mount point
                 directories they control. Example: the mount point
diff --git a/man/systemd.service.xml b/man/systemd.service.xml
index 8005a51a47..b01641f1e4 100644
--- a/man/systemd.service.xml
+++ b/man/systemd.service.xml
@@ -68,7 +68,10 @@
                 service specific configuration options are configured
                 in the [Service] section.</para>
 
-                <para>Additional options are listed in <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+                <para>Additional options are listed in
+                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+                which define the execution environment the commands
+                are executed in.</para>
         </refsect1>
 
         <refsect1>
diff --git a/man/systemd.socket.xml b/man/systemd.socket.xml
index e25b5a00fd..81f9deab36 100644
--- a/man/systemd.socket.xml
+++ b/man/systemd.socket.xml
@@ -70,7 +70,13 @@
                 in the [Socket] section.</para>
 
                 <para>Additional options are listed in
-                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+                <citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+                which define the execution environment the
+                <option>ExecStartPre=</option>,
+                <option>ExecStartPost=</option>,
+                <option>ExecStopPre=</option> and
+                <option>ExecStoptPost=</option> commands are executed
+                in.</para>
 
                 <para>For each socket file a matching service file
                 (see