copy from xml/en/docs/njs_about.xml
copy to xml/en/docs/njs/index.xml
--- a/xml/en/docs/njs_about.xml
+++ b/xml/en/docs/njs/index.xml
@@ -4,20 +4,20 @@
   Copyright (C) Nginx, Inc.
   -->
 
-<!DOCTYPE article SYSTEM "../../../dtd/article.dtd">
+<!DOCTYPE article SYSTEM "../../../../dtd/article.dtd">
 
-<article name="About njs"
-        link="/en/docs/njs_about.html"
+<article name="njs scripting language"
+        link="/en/docs/njs/index.html"
         lang="en"
-        rev="22">
+        rev="23">
 
 <section id="summary">
 
 <para>
 njs is a subset of the JavaScript language that allows
 implementing location and variable handlers in
-<link doc="http/ngx_http_js_module.xml">http</link> and
-<link doc="stream/ngx_stream_js_module.xml">stream</link>.
+<link doc="../http/ngx_http_js_module.xml">http</link> and
+<link doc="../stream/ngx_stream_js_module.xml">stream</link>.
 njs is created in compliance with
 <link url="http://www.ecma-international.org/ecma-262/5.1/">ECMAScript 5.1</link>
 (strict mode) with some
@@ -247,7 +247,7 @@ non-integer fractions (<literal>.235</li
 
 <para>
 The complete list of njs changes is available
-<link doc="njs/njs_changes.xml">here</link>.
+<link doc="njs_changes.xml">here</link>.
 </para>
 </section>
 
@@ -256,7 +256,7 @@ The complete list of njs changes is avai
 
 <para>
 njs API reference is available
-<link doc="njs/njs_api.xml">here</link>.
+<link doc="njs_api.xml">here</link>.
 </para>
 </section>
 
@@ -268,11 +268,11 @@ njs is available in two modules:
 <list type="bullet">
 
 <listitem>
-<link doc="http/ngx_http_js_module.xml">ngx_http_js_module</link>
+<link doc="../http/ngx_http_js_module.xml">ngx_http_js_module</link>
 </listitem>
 
 <listitem>
-<link doc="stream/ngx_stream_js_module.xml">ngx_stream_js_module</link>
+<link doc="../stream/ngx_stream_js_module.xml">ngx_stream_js_module</link>
 </listitem>
 
 </list>
@@ -287,12 +287,12 @@ njs command-line <link id="cli">utility<
 <section id="install_package" name="Installing as a Linux package">
 <para>
 For Linux, njs modules
-<link doc="../linux_packages.xml" id="dynmodules">packages</link> can be used:
+<link doc="../../linux_packages.xml" id="dynmodules">packages</link> can be used:
 <list type="bullet">
 
 <listitem>
 <literal>nginx-module-njs</literal> — njs
-<link doc="ngx_core_module.xml" id="load_module">dynamic</link> modules
+<link doc="../ngx_core_module.xml" id="load_module">dynamic</link> modules
 </listitem>
 
 <listitem>
@@ -321,7 +321,7 @@ Then the modules should be compiled usin
 ./configure --add-module=<value>path-to-njs</value>/nginx
 </example>
 The modules can also be built as
-<link doc="ngx_core_module.xml" id="load_module">dynamic</link>:
+<link doc="../ngx_core_module.xml" id="load_module">dynamic</link>:
 <example>
 ./configure --add-dynamic-module=<value>path-to-njs</value>/nginx
 </example>
@@ -349,8 +349,8 @@ the Linux <link id="install_package">pac
 or after building from the <link id="install_sources">sources</link>.
 Compared to njs running inside nginx,
 nginx objects
-(<link doc="njs/njs_api.xml" id="http">HTTP</link> and
-<link doc="njs/njs_api.xml" id="stream">Stream</link>)
+(<link doc="njs_api.xml" id="http">HTTP</link> and
+<link doc="njs_api.xml" id="stream">Stream</link>)
 are not available in the utility.
 <example>
 $ echo "2**3" | njs -