update & fix install guide after install refactor

_sources/dev/install/installation.txt

 Installation
 ============
 
-Step by step installation for Debian / Ubuntu with virtualenv.
+Step by step installation for Debian/Ubuntu with virtualenv.
 
 Source: https://about.okhin.fr/posts/Searx/ with some additions
 
 How to: `Setup searx in a couple of hours with a free SSL
 certificate <https://www.reddit.com/r/privacytoolsIO/comments/366kvn/how_to_setup_your_own_privacy_respecting_search/>`__
 
+.. contents::
+   :depth: 3
+
 Basic installation
 ------------------
 
 For Ubuntu, be sure to have enable universe repository.
 
-Install packages :
+Install packages:
 
 .. code:: sh
 
     sudo apt-get install git build-essential libxslt-dev python-dev python-virtualenv python-pybabel zlib1g-dev libffi-dev libssl-dev
 
-Install searx :
+Install searx:
 
 .. code:: sh
 
     sudo useradd searx -d /usr/local/searx
     sudo chown searx:searx -R /usr/local/searx
 
-Install dependencies in a virtualenv :
+Install dependencies in a virtualenv:
 
 .. code:: sh
 
     cd /usr/local/searx
     virtualenv searx-ve
     . ./searx-ve/bin/activate
-    pip install -r requirements.txt
-    python setup.py install
+    ./manage.sh update_packages
 
 Configuration
 -------------
 Check
 -----
 
-Start searx :
+Start searx:
 
 .. code:: sh
 
 
 Go to http://localhost:8888
 
-If everything works fine, disable the debug option in settings.yml :
+If everything works fine, disable the debug option in settings.yml:
 
 .. code:: sh
 
 uwsgi
 -----
 
-Install packages :
+Install packages:
 
 .. code:: sh
 
     sudo apt-get install uwsgi uwsgi-plugin-python
 
 Create the configuration file /etc/uwsgi/apps-available/searx.ini with
-this content :
+this content:
 
 ::
 
     pythonpath = /usr/local/searx/
     chdir = /usr/local/searx/searx/
 
-Activate the uwsgi application and restart :
+Activate the uwsgi application and restart:
 
 .. code:: sh
 
 ^^^^^^^^^^
 
 If nginx is not installed (uwsgi will not work with the package
-nginx-light) :
+nginx-light):
 
 .. code:: sh
 
 """""""""""
 
 Create the configuration file /etc/nginx/sites-available/searx with this
-content :
+content:
 
 .. code:: nginx
 
         }
     }
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
     sudo service uwsgi restart
 
 from subdirectory URL (/searx)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+""""""""""""""""""""""""""""""
 
 Add this configuration in the server config file
-/etc/nginx/sites-available/default :
+/etc/nginx/sites-available/default:
 
 .. code:: nginx
 
 
     base_url : http://your.domain.tld/searx/
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
 
 for better privacy you can disable nginx logs about searx.
 
-how to proceed : below ``uwsgi_pass`` in
+how to proceed: below ``uwsgi_pass`` in
 /etc/nginx/sites-available/default add
 
 ::
     access_log /dev/null;
     error_log /dev/null;
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
     sudo service nginx restart
 
 with apache
------------
+^^^^^^^^^^^
 
-Add wsgi mod :
+Add wsgi mod:
 
 .. code:: sh
 
     sudo apt-get install libapache2-mod-uwsgi
     sudo a2enmod uwsgi
 
-Add this configuration in the file /etc/apache2/apache2.conf :
+Add this configuration in the file /etc/apache2/apache2.conf:
 
 .. code:: apache
 
 change ``<Location />`` by the location of your instance, like
 ``<Location /searx>``.
 
-Restart Apache :
+Restart Apache:
 
 .. code:: sh
 
     sudo /etc/init.d/apache2 restart
 
 disable logs
-------------
+""""""""""""
 
 For better privacy you can disable Apache logs.
 
-WARNING : not tested
+WARNING: not tested
 
-WARNING : you can only disable logs for the whole (virtual) server not
+WARNING: you can only disable logs for the whole (virtual) server not
 for a specific path.
 
-Go back to /etc/apache2/apache2.conf and above ``<Location />`` add :
+Go back to /etc/apache2/apache2.conf and above ``<Location />`` add:
 
 .. code:: apache
 
     CustomLog /dev/null combined
 
-Restart Apache :
+Restart Apache:
 
 .. code:: sh
 
     git stash
     git pull origin master
     git stash apply
-    pip install --upgrade -r requirements.txt
+    ./manage.sh update_packages
     sudo service uwsgi restart
 
+Docker
+------
+
+Make sure you have installed Docker. For instance, you can deploy searx like this:
+
+.. code:: sh
+
+    docker pull wonderfall/searx
+    docker run -d --name searx -p $PORT:8888 wonderfall/searx
+
+Go to http://localhost:$PORT.
+
+See https://hub.docker.com/r/wonderfall/searx/ for more informations.
+
+It's also possible to build searx from the embedded Dockerfile.
+
+.. code:: sh
+
+    git clone https://github.com/asciimoo/searx.git
+    cd searx
+    docker build -t whatever/searx .

dev/install/installation.html

     <script type="text/javascript" src="../../_static/underscore.js"></script>
     <script type="text/javascript" src="../../_static/doctools.js"></script>
     <link rel="top" title="searx 0.8.0 documentation" href="../../index.html" />
-    <link rel="next" title="Search API" href="../search_api.html" />
+    <link rel="next" title="Engine overview" href="../engine_overview.html" />
     <link rel="prev" title="How to contribute" href="../contribution_guide.html" />
    
   
           <div class="body" role="main">
             
   <div class="section" id="installation">
-<h1>Installation<a class="headerlink" href="#installation" title="Permalink to this headline">¶</a></h1>
-<p>Step by step installation for Debian / Ubuntu with virtualenv.</p>
+<h1><a class="toc-backref" href="#id2">Installation</a><a class="headerlink" href="#installation" title="Permalink to this headline">¶</a></h1>
+<p>Step by step installation for Debian/Ubuntu with virtualenv.</p>
 <p>Source: <a class="reference external" href="https://about.okhin.fr/posts/Searx/">https://about.okhin.fr/posts/Searx/</a> with some additions</p>
 <p>How to: <a class="reference external" href="https://www.reddit.com/r/privacytoolsIO/comments/366kvn/how_to_setup_your_own_privacy_respecting_search/">Setup searx in a couple of hours with a free SSL
 certificate</a></p>
+<div class="contents topic" id="contents">
+<p class="topic-title first">Contents</p>
+<ul class="simple">
+<li><a class="reference internal" href="#installation" id="id2">Installation</a><ul>
+<li><a class="reference internal" href="#basic-installation" id="id3">Basic installation</a></li>
+<li><a class="reference internal" href="#configuration" id="id4">Configuration</a></li>
+<li><a class="reference internal" href="#check" id="id5">Check</a></li>
+<li><a class="reference internal" href="#uwsgi" id="id6">uwsgi</a></li>
+<li><a class="reference internal" href="#web-server" id="id7">Web server</a><ul>
+<li><a class="reference internal" href="#with-nginx" id="id8">with nginx</a></li>
+<li><a class="reference internal" href="#with-apache" id="id9">with apache</a></li>
+</ul>
+</li>
+<li><a class="reference internal" href="#how-to-update" id="id10">How to update</a></li>
+<li><a class="reference internal" href="#docker" id="id11">Docker</a></li>
+</ul>
+</li>
+</ul>
+</div>
 <div class="section" id="basic-installation">
-<h2>Basic installation<a class="headerlink" href="#basic-installation" title="Permalink to this headline">¶</a></h2>
+<h2><a class="toc-backref" href="#id3">Basic installation</a><a class="headerlink" href="#basic-installation" title="Permalink to this headline">¶</a></h2>
 <p>For Ubuntu, be sure to have enable universe repository.</p>
-<p>Install packages :</p>
+<p>Install packages:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo apt-get install git build-essential libxslt-dev python-dev python-virtualenv python-pybabel zlib1g-dev libffi-dev libssl-dev
 </pre></div>
 </div>
-<p>Install searx :</p>
+<p>Install searx:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>cd /usr/local
 sudo git clone https://github.com/asciimoo/searx.git
 sudo useradd searx -d /usr/local/searx
 sudo chown searx:searx -R /usr/local/searx
 </pre></div>
 </div>
-<p>Install dependencies in a virtualenv :</p>
+<p>Install dependencies in a virtualenv:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo -u searx -i
 cd /usr/local/searx
 virtualenv searx-ve
 . ./searx-ve/bin/activate
-pip install -r requirements.txt
-python setup.py install
+./manage.sh update_packages
 </pre></div>
 </div>
 </div>
 <div class="section" id="configuration">
-<h2>Configuration<a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h2>
+<h2><a class="toc-backref" href="#id4">Configuration</a><a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h2>
 <div class="code sh highlight-python"><div class="highlight"><pre>sed -i -e &quot;s/ultrasecretkey/`openssl rand -hex 16`/g&quot; searx/settings.yml
 </pre></div>
 </div>
 <p>Edit searx/settings.yml if necessary.</p>
 </div>
 <div class="section" id="check">
-<h2>Check<a class="headerlink" href="#check" title="Permalink to this headline">¶</a></h2>
-<p>Start searx :</p>
+<h2><a class="toc-backref" href="#id5">Check</a><a class="headerlink" href="#check" title="Permalink to this headline">¶</a></h2>
+<p>Start searx:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>python searx/webapp.py
 </pre></div>
 </div>
 <p>Go to <a class="reference external" href="http://localhost:8888">http://localhost:8888</a></p>
-<p>If everything works fine, disable the debug option in settings.yml :</p>
+<p>If everything works fine, disable the debug option in settings.yml:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sed -i -e &quot;s/debug : True/debug : False/g&quot; searx/settings.yml
 </pre></div>
 </div>
 twice).</p>
 </div>
 <div class="section" id="uwsgi">
-<h2>uwsgi<a class="headerlink" href="#uwsgi" title="Permalink to this headline">¶</a></h2>
-<p>Install packages :</p>
+<h2><a class="toc-backref" href="#id6">uwsgi</a><a class="headerlink" href="#uwsgi" title="Permalink to this headline">¶</a></h2>
+<p>Install packages:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo apt-get install uwsgi uwsgi-plugin-python
 </pre></div>
 </div>
 <p>Create the configuration file /etc/uwsgi/apps-available/searx.ini with
-this content :</p>
+this content:</p>
 <div class="highlight-python"><div class="highlight"><pre>[uwsgi]
 # Who will run the code
 uid = searx
 chdir = /usr/local/searx/searx/
 </pre></div>
 </div>
-<p>Activate the uwsgi application and restart :</p>
+<p>Activate the uwsgi application and restart:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>cd /etc/uwsgi/apps-enabled
 ln -s ../apps-available/searx.ini
 /etc/init.d/uwsgi restart
 </div>
 </div>
 <div class="section" id="web-server">
-<h2>Web server<a class="headerlink" href="#web-server" title="Permalink to this headline">¶</a></h2>
+<h2><a class="toc-backref" href="#id7">Web server</a><a class="headerlink" href="#web-server" title="Permalink to this headline">¶</a></h2>
 <div class="section" id="with-nginx">
-<h3>with nginx<a class="headerlink" href="#with-nginx" title="Permalink to this headline">¶</a></h3>
+<h3><a class="toc-backref" href="#id8">with nginx</a><a class="headerlink" href="#with-nginx" title="Permalink to this headline">¶</a></h3>
 <p>If nginx is not installed (uwsgi will not work with the package
-nginx-light) :</p>
+nginx-light):</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo apt-get install nginx
 </pre></div>
 </div>
 <div class="section" id="hosted-at">
 <h4>Hosted at /<a class="headerlink" href="#hosted-at" title="Permalink to this headline">¶</a></h4>
 <p>Create the configuration file /etc/nginx/sites-available/searx with this
-content :</p>
+content:</p>
 <div class="code nginx highlight-python"><div class="highlight"><pre>server {
     listen 80;
     server_name searx.example.com;
 }
 </pre></div>
 </div>
-<p>Restart service :</p>
+<p>Restart service:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo service nginx restart
 sudo service uwsgi restart
 </pre></div>
 </div>
+</div>
 <div class="section" id="from-subdirectory-url-searx">
-<h5>from subdirectory URL (/searx)<a class="headerlink" href="#from-subdirectory-url-searx" title="Permalink to this headline">¶</a></h5>
+<h4>from subdirectory URL (/searx)<a class="headerlink" href="#from-subdirectory-url-searx" title="Permalink to this headline">¶</a></h4>
 <p>Add this configuration in the server config file
-/etc/nginx/sites-available/default :</p>
+/etc/nginx/sites-available/default:</p>
 <div class="code nginx highlight-python"><div class="highlight"><pre>location = /searx { rewrite ^ /searx/; }
 location /searx {
         try_files $uri @searx;
 <div class="highlight-python"><div class="highlight"><pre>base_url : http://your.domain.tld/searx/
 </pre></div>
 </div>
-<p>Restart service :</p>
+<p>Restart service:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo service nginx restart
 sudo service uwsgi restart
 </pre></div>
 </div>
-</div>
 <div class="section" id="disable-logs">
 <h5>disable logs<a class="headerlink" href="#disable-logs" title="Permalink to this headline">¶</a></h5>
 <p>for better privacy you can disable nginx logs about searx.</p>
-<p>how to proceed : below <code class="docutils literal"><span class="pre">uwsgi_pass</span></code> in
+<p>how to proceed: below <code class="docutils literal"><span class="pre">uwsgi_pass</span></code> in
 /etc/nginx/sites-available/default add</p>
 <div class="highlight-python"><div class="highlight"><pre><span class="n">access_log</span> <span class="o">/</span><span class="n">dev</span><span class="o">/</span><span class="n">null</span><span class="p">;</span>
 <span class="n">error_log</span> <span class="o">/</span><span class="n">dev</span><span class="o">/</span><span class="n">null</span><span class="p">;</span>
 </pre></div>
 </div>
-<p>Restart service :</p>
+<p>Restart service:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo service nginx restart
 </pre></div>
 </div>
 </div>
 </div>
 </div>
-</div>
 <div class="section" id="with-apache">
-<h2>with apache<a class="headerlink" href="#with-apache" title="Permalink to this headline">¶</a></h2>
-<p>Add wsgi mod :</p>
+<h3><a class="toc-backref" href="#id9">with apache</a><a class="headerlink" href="#with-apache" title="Permalink to this headline">¶</a></h3>
+<p>Add wsgi mod:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo apt-get install libapache2-mod-uwsgi
 sudo a2enmod uwsgi
 </pre></div>
 </div>
-<p>Add this configuration in the file /etc/apache2/apache2.conf :</p>
+<p>Add this configuration in the file /etc/apache2/apache2.conf:</p>
 <div class="code apache highlight-python"><div class="highlight"><pre>&lt;Location /&gt;
     Options FollowSymLinks Indexes
     SetHandler uwsgi-handler
 <p>Note that if your instance of searx is not at the root, you should
 change <code class="docutils literal"><span class="pre">&lt;Location</span> <span class="pre">/&gt;</span></code> by the location of your instance, like
 <code class="docutils literal"><span class="pre">&lt;Location</span> <span class="pre">/searx&gt;</span></code>.</p>
-<p>Restart Apache :</p>
+<p>Restart Apache:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo /etc/init.d/apache2 restart
 </pre></div>
 </div>
-</div>
 <div class="section" id="id1">
-<h2>disable logs<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h2>
+<h4>disable logs<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h4>
 <p>For better privacy you can disable Apache logs.</p>
-<p>WARNING : not tested</p>
-<p>WARNING : you can only disable logs for the whole (virtual) server not
+<p>WARNING: not tested</p>
+<p>WARNING: you can only disable logs for the whole (virtual) server not
 for a specific path.</p>
-<p>Go back to /etc/apache2/apache2.conf and above <code class="docutils literal"><span class="pre">&lt;Location</span> <span class="pre">/&gt;</span></code> add :</p>
+<p>Go back to /etc/apache2/apache2.conf and above <code class="docutils literal"><span class="pre">&lt;Location</span> <span class="pre">/&gt;</span></code> add:</p>
 <div class="code apache highlight-python"><div class="highlight"><pre>CustomLog /dev/null combined
 </pre></div>
 </div>
-<p>Restart Apache :</p>
+<p>Restart Apache:</p>
 <div class="code sh highlight-python"><div class="highlight"><pre>sudo /etc/init.d/apache2 restart
 </pre></div>
 </div>
 </div>
+</div>
+</div>
 <div class="section" id="how-to-update">
-<h2>How to update<a class="headerlink" href="#how-to-update" title="Permalink to this headline">¶</a></h2>
+<h2><a class="toc-backref" href="#id10">How to update</a><a class="headerlink" href="#how-to-update" title="Permalink to this headline">¶</a></h2>
 <div class="code sh highlight-python"><div class="highlight"><pre>cd /usr/local/searx
 sudo -u searx -i
 . ./searx-ve/bin/activate
 git stash
 git pull origin master
 git stash apply
-pip install --upgrade -r requirements.txt
+./manage.sh update_packages
 sudo service uwsgi restart
 </pre></div>
 </div>
 </div>
+<div class="section" id="docker">
+<h2><a class="toc-backref" href="#id11">Docker</a><a class="headerlink" href="#docker" title="Permalink to this headline">¶</a></h2>
+<p>Make sure you have installed Docker. For instance, you can deploy searx like this:</p>
+<div class="code sh highlight-python"><div class="highlight"><pre>docker pull wonderfall/searx
+docker run -d --name searx -p $PORT:8888 wonderfall/searx
+</pre></div>
+</div>
+<p>Go to <a class="reference external" href="http://localhost:$PORT">http://localhost:$PORT</a>.</p>
+<p>See <a class="reference external" href="https://hub.docker.com/r/wonderfall/searx/">https://hub.docker.com/r/wonderfall/searx/</a> for more informations.</p>
+<p>It&#8217;s also possible to build searx from the embedded Dockerfile.</p>
+<div class="code sh highlight-python"><div class="highlight"><pre>git clone https://github.com/asciimoo/searx.git
+cd searx
+docker build -t whatever/searx .
+</pre></div>
+</div>
+</div>
 </div>
 
 

docs/dev/install/installation.rst

 Installation
 ============
 
-Step by step installation for Debian / Ubuntu with virtualenv.
+Step by step installation for Debian/Ubuntu with virtualenv.
 
 Source: https://about.okhin.fr/posts/Searx/ with some additions
 
 How to: `Setup searx in a couple of hours with a free SSL
 certificate <https://www.reddit.com/r/privacytoolsIO/comments/366kvn/how_to_setup_your_own_privacy_respecting_search/>`__
 
+.. contents::
+   :depth: 3
+
 Basic installation
 ------------------
 
 For Ubuntu, be sure to have enable universe repository.
 
-Install packages :
+Install packages:
 
 .. code:: sh
 
     sudo apt-get install git build-essential libxslt-dev python-dev python-virtualenv python-pybabel zlib1g-dev libffi-dev libssl-dev
 
-Install searx :
+Install searx:
 
 .. code:: sh
 
     sudo useradd searx -d /usr/local/searx
     sudo chown searx:searx -R /usr/local/searx
 
-Install dependencies in a virtualenv :
+Install dependencies in a virtualenv:
 
 .. code:: sh
 
     cd /usr/local/searx
     virtualenv searx-ve
     . ./searx-ve/bin/activate
-    pip install -r requirements.txt
-    python setup.py install
+    ./manage.sh update_packages
 
 Configuration
 -------------
 Check
 -----
 
-Start searx :
+Start searx:
 
 .. code:: sh
 
 
 Go to http://localhost:8888
 
-If everything works fine, disable the debug option in settings.yml :
+If everything works fine, disable the debug option in settings.yml:
 
 .. code:: sh
 
 uwsgi
 -----
 
-Install packages :
+Install packages:
 
 .. code:: sh
 
     sudo apt-get install uwsgi uwsgi-plugin-python
 
 Create the configuration file /etc/uwsgi/apps-available/searx.ini with
-this content :
+this content:
 
 ::
 
     pythonpath = /usr/local/searx/
     chdir = /usr/local/searx/searx/
 
-Activate the uwsgi application and restart :
+Activate the uwsgi application and restart:
 
 .. code:: sh
 
 ^^^^^^^^^^
 
 If nginx is not installed (uwsgi will not work with the package
-nginx-light) :
+nginx-light):
 
 .. code:: sh
 
 """""""""""
 
 Create the configuration file /etc/nginx/sites-available/searx with this
-content :
+content:
 
 .. code:: nginx
 
         }
     }
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
     sudo service uwsgi restart
 
 from subdirectory URL (/searx)
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+""""""""""""""""""""""""""""""
 
 Add this configuration in the server config file
-/etc/nginx/sites-available/default :
+/etc/nginx/sites-available/default:
 
 .. code:: nginx
 
 
     base_url : http://your.domain.tld/searx/
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
 
 for better privacy you can disable nginx logs about searx.
 
-how to proceed : below ``uwsgi_pass`` in
+how to proceed: below ``uwsgi_pass`` in
 /etc/nginx/sites-available/default add
 
 ::
     access_log /dev/null;
     error_log /dev/null;
 
-Restart service :
+Restart service:
 
 .. code:: sh
 
     sudo service nginx restart
 
 with apache
------------
+^^^^^^^^^^^
 
-Add wsgi mod :
+Add wsgi mod:
 
 .. code:: sh
 
     sudo apt-get install libapache2-mod-uwsgi
     sudo a2enmod uwsgi
 
-Add this configuration in the file /etc/apache2/apache2.conf :
+Add this configuration in the file /etc/apache2/apache2.conf:
 
 .. code:: apache
 
 change ``<Location />`` by the location of your instance, like
 ``<Location /searx>``.
 
-Restart Apache :
+Restart Apache:
 
 .. code:: sh
 
     sudo /etc/init.d/apache2 restart
 
 disable logs
-------------
+""""""""""""
 
 For better privacy you can disable Apache logs.
 
-WARNING : not tested
+WARNING: not tested
 
-WARNING : you can only disable logs for the whole (virtual) server not
+WARNING: you can only disable logs for the whole (virtual) server not
 for a specific path.
 
-Go back to /etc/apache2/apache2.conf and above ``<Location />`` add :
+Go back to /etc/apache2/apache2.conf and above ``<Location />`` add:
 
 .. code:: apache
 
     CustomLog /dev/null combined
 
-Restart Apache :
+Restart Apache:
 
 .. code:: sh
 
     git stash
     git pull origin master
     git stash apply
-    pip install --upgrade -r requirements.txt
+    ./manage.sh update_packages
     sudo service uwsgi restart
 
+Docker
+------
+
+Make sure you have installed Docker. For instance, you can deploy searx like this:
+
+.. code:: sh
+
+    docker pull wonderfall/searx
+    docker run -d --name searx -p $PORT:8888 wonderfall/searx
+
+Go to http://localhost:$PORT.
+
+See https://hub.docker.com/r/wonderfall/searx/ for more informations.
+
+It's also possible to build searx from the embedded Dockerfile.
+
+.. code:: sh
+
+    git clone https://github.com/asciimoo/searx.git
+    cd searx
+    docker build -t whatever/searx .