--- a/xml/en/docs/stream/ngx_stream_ssl_module.xml	Tue Mar 26 10:55:49 2019 +0300
+++ b/xml/en/docs/stream/ngx_stream_ssl_module.xml	Tue Mar 26 17:09:15 2019 +0300
@@ -9,7 +9,7 @@
 <module name="Module ngx_stream_ssl_module"
         link="/en/docs/stream/ngx_stream_ssl_module.html"
         lang="en"
-        rev="20">
+        rev="21">
 
 <section id="summary">
 
@@ -130,6 +130,16 @@
 and this may have a negative impact on performance.
 </para>
 
+<para id="ssl_certificate_data">
+The value
+<literal>data</literal>:<value>$variable</value>
+can be specified instead of the <value>file</value> (1.15.10),
+which loads a certificate from a variable without using intermediate files.
+Note that inappropriate use of this syntax may have its security implications,
+such as writing secret key data to
+<link doc="../ngx_core_module.xml" id="error_log">error log</link>.
+</para>
+
 </directive>
 
 
@@ -152,6 +162,16 @@
 from the OpenSSL engine <value>name</value>.
 </para>
 
+<para id="ssl_certificate_key_data">
+The value
+<literal>data</literal>:<value>$variable</value>
+can be specified instead of the <value>file</value> (1.15.10),
+which loads a secret key from a variable without using intermediate files.
+Note that inappropriate use of this syntax may have its security implications,
+such as writing secret key data to
+<link doc="../ngx_core_module.xml" id="error_log">error log</link>.
+</para>
+
 <para>
 Since version 1.15.9, variables can be used in the <value>file</value> name
 when using OpenSSL 1.0.2 or higher.