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-[**I am a developer: ** Developer API](#developer-api)
-
-[**I am a template designer: ** Guide for template designers](#guide-for-template-designer)
-
----
-
-## Developer API
-
-### What can I do with plugins?
-
-The plugin system let you:
-
-- insert content into specific places across templates.
-- alter data before templates rendering.
-- alter data before saving new links.
-
-### How can I create a plugin for Shaarli?
-
-First, chose a plugin name, such as `demo_plugin`.
-
-Under `plugin` folder, create a folder named with your plugin name. Then create a <plugin_name>.meta file and a <plugin_name>.php file in that folder.
-
-You should have the following tree view:
-
-```
-| index.php
-| plugins/
-|---| demo_plugin/
-|   |---| demo_plugin.meta
-|   |---| demo_plugin.php
-```
-
-### Plugin initialization
-
-At the beginning of Shaarli execution, all enabled plugins are loaded. At this point, the plugin system looks for an `init()` function in the <plugin_name>.php to execute and run it if it exists. This function must be named this way, and takes the `ConfigManager` as parameter.
-
-    <plugin_name>_init($conf)
-
-This function can be used to create initial data, load default settings, etc. But also to set *plugin errors*. If the initialization function returns an array of strings, they will be understand as errors, and displayed in the header to logged in users.
-
-The plugin system also looks for a `description` variable in the <plugin_name>.meta file, to be displayed in the plugin administration page.
-
-    description="The plugin does this and that."
-
-### Understanding hooks
-
-A plugin is a set of functions. Each function will be triggered by the plugin system at certain point in Shaarli execution.
-
-These functions need to be named with this pattern:
-
-```
-hook_<plugin_name>_<hook_name>($data, $conf)
-```
-
-Parameters:
-
-- data: see [$data section](https://shaarli.readthedocs.io/en/master/Plugin-System/#plugins-data)
-- conf: the `ConfigManager` instance.
-
-For example, if my plugin want to add data to the header, this function is needed:
-
-    hook_demo_plugin_render_header
-
-If this function is declared, and the plugin enabled, it will be called every time Shaarli is rendering the header.
-
-### Plugin's data
-
-#### Parameters
-
-Every hook function has a `$data` parameter. Its content differs for each hooks.
-
-**This parameter needs to be returned every time**, otherwise data is lost.
-
-    return $data;
-
-#### Special data
-
-Special additional data are passed to every hook through the
-`$data` parameter to give you access to additional context, and services.
-
-Complete list:
-
-  * `_PAGE_` (string): if the current hook is used to render a template, its name is passed through this additional parameter.
-  * `_LOGGEDIN_` (bool): whether the user is logged in or not.
-  * `_BASE_PATH_` (string): if Shaarli instance is hosted under a subfolder, contains the subfolder path to `index.php` (e.g. `https://domain.tld/shaarli/` -> `/shaarli/`).
-  * `_BOOKMARK_SERVICE_` (`BookmarkServiceInterface`): bookmark service instance, for advanced usage.
-
-Example:
-
-```php
-if ($data['_PAGE_'] === TemplatePage::LINKLIST && $data['LOGGEDIN'] === true) {
-    // Do something for logged in users when the link list is rendered
-}
-```
-
-#### Filling templates placeholder
-
-Template placeholders are displayed in template in specific places.
-
-RainTPL displays every element contained in the placeholder's array. These element can be added by plugins.
-
-For example, let's add a value in the placeholder `top_placeholder` which is displayed at the top of my page:
-
-```php
-$data['top_placeholder'][] = 'My content';
-# OR
-array_push($data['top_placeholder'], 'My', 'content');
-
-return $data;
-```
-
-#### Data manipulation
-
-When a page is displayed, every variable send to the template engine is passed to plugins before that in `$data`.
-
-The data contained by this array can be altered before template rendering.
-
-For example, in linklist, it is possible to alter every title:
-
-```php
-// mind the reference if you want $data to be altered
-foreach ($data['links'] as &$value) {
-    // String reverse every title.
-    $value['title'] = strrev($value['title']);
-}
-
-return $data;
-```
-
-### Metadata
-
-Every plugin needs a `<plugin_name>.meta` file, which is in fact an `.ini` file (`KEY="VALUE"`), to be listed in plugin administration.
-
-Each file contain two keys:
-
-- `description`: plugin description
-- `parameters`: user parameter names, separated by a `;`.
-- `parameter.<PARAMETER_NAME>`: add a text description the specified parameter.
-
-> Note: In PHP, `parse_ini_file()` seems to want strings to be between by quotes `"` in the ini file.
-
-### It's not working!
-
-Use `demo_plugin` as a functional example. It covers most of the plugin system features.
-
-If it's still not working, please [open an issue](https://github.com/shaarli/Shaarli/issues/new).
-
-### Hooks
-
-| Hooks         | Description   |
-| ------------- |:-------------:|
-| [render_header](#render_header) | Allow plugin to add content in page headers. |
-| [render_includes](#render_includes) | Allow plugin to include their own CSS files. |
-| [render_footer](#render_footer) | Allow plugin to add content in page footer and include their own JS files. |
-| [render_linklist](#render_linklist) | It allows to add content at the begining and end of the page, after every link displayed and to alter link data. |
-| [render_editlink](#render_editlink) |  Allow to add fields in the form, or display elements. |
-| [render_tools](#render_tools) |  Allow to add content at the end of the page. |
-| [render_picwall](#render_picwall) |  Allow to add content at the top and bottom of the page. |
-| [render_tagcloud](#render_tagcloud) |  Allow to add content at the top and bottom of the page, and after all tags. |
-| [render_taglist](#render_taglist) |  Allow to add content at the top and bottom of the page, and after all tags. |
-| [render_daily](#render_daily) |  Allow to add content at the top and bottom of the page, the bottom of each link and to alter data. |
-| [render_feed](#render_feed) | Allow to do add tags in RSS and ATOM feeds. |
-| [save_link](#save_link) | Allow to alter the link being saved in the datastore. |
-| [delete_link](#delete_link) | Allow to do an action before a link is deleted from the datastore. |
-| [save_plugin_parameters](#save_plugin_parameters) | Allow to manipulate plugin parameters before they're saved. |
-
-
-
-#### render_header
-
-Triggered on every page.
-
-Allow plugin to add content in page headers.
-
-##### Data
-
-`$data` is an array containing:
-
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `buttons_toolbar`: after the list of buttons in the header.
-
-![buttons_toolbar_example](http://i.imgur.com/ssJUOrt.png)
-
-- `fields_toolbar`: after search fields in the header.
-
-> Note: This will only be called in linklist.
-
-![fields_toolbar_example](http://i.imgur.com/3GMifI2.png)
-
-#### render_includes
-
-Triggered on every page.
-
-Allow plugin to include their own CSS files.
-
-##### Data
-
-`$data` is an array containing:
-
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `css_files`: called after loading default CSS.
-
-> Note: only add the path of the CSS file. E.g: `plugins/demo_plugin/custom_demo.css`.
-
-#### render_footer
-
-Triggered on every page.
-
-Allow plugin to add content in page footer and include their own JS files.
-
-##### Data
-
-`$data` is an array containing:
-
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `text`: called after the end of the footer text.
-- `endofpage`: called at the end of the page.
-
-![text_example](http://i.imgur.com/L5S2YEH.png)
-
-- `js_files`: called at the end of the page, to include custom JS scripts.
-
-> Note: only add the path of the JS file. E.g: `plugins/demo_plugin/custom_demo.js`.
-
-#### render_linklist
-
-Triggered when `linklist` is displayed (list of links, permalink, search, tag filtered, etc.).
-
-It allows to add content at the begining and end of the page, after every link displayed and to alter link data.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data, including links.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `action_plugin`: next to the button "private only" at the top and bottom of the page.
-
-![action_plugin_example](http://i.imgur.com/Q12PWg0.png)
-
-- `link_plugin`: for every link, between permalink and link URL.
-
-![link_plugin_example](http://i.imgur.com/3oDPhWx.png)
-
-- `plugin_start_zone`: before displaying the template content.
-
-![plugin_start_zone_example](http://i.imgur.com/OVBkGy3.png)
-
-- `plugin_end_zone`: after displaying the template content.
-
-![plugin_end_zone_example](http://i.imgur.com/6IoRuop.png)
-
-#### render_editlink
-
-Triggered when the link edition form is displayed.
-
-Allow to add fields in the form, or display elements.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `edit_link_plugin`: after tags field.
-
-![edit_link_plugin_example](http://i.imgur.com/5u17Ens.png)
-
-#### render_tools
-
-Triggered when the "tools" page is displayed.
-
-Allow to add content at the end of the page.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `tools_plugin`: at the end of the page.
-
-![tools_plugin_example](http://i.imgur.com/Bqhu9oQ.png)
-
-#### render_picwall
-
-Triggered when picwall is displayed.
-
-Allow to add content at the top and bottom of the page.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `plugin_start_zone`: before displaying the template content.
-- `plugin_end_zone`: after displaying the template content.
-
-![plugin_start_end_zone_example](http://i.imgur.com/tVTQFER.png)
-
-#### render_tagcloud
-
-Triggered when tagcloud is displayed.
-
-Allow to add content at the top and bottom of the page.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `plugin_start_zone`: before displaying the template content.
-- `plugin_end_zone`: after displaying the template content.
-
-For each tag, the following placeholder can be used:
-
-- `tag_plugin`: after each tag
-
-![plugin_start_end_zone_example](http://i.imgur.com/vHmyT3a.png)
-
-
-#### render_taglist
-
-Triggered when taglist is displayed.
-
-Allow to add content at the top and bottom of the page.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `plugin_start_zone`: before displaying the template content.
-- `plugin_end_zone`: after displaying the template content.
-
-For each tag, the following placeholder can be used:
-
-- `tag_plugin`: after each tag
-
-#### render_daily
-
-Triggered when tagcloud is displayed.
-
-Allow to add content at the top and bottom of the page, the bottom of each link and to alter data.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data, including links.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Items can be displayed in templates by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `link_plugin`: used at bottom of each link.
-
-![link_plugin_example](http://i.imgur.com/hzhMfSZ.png)
-
-- `plugin_start_zone`: before displaying the template content.
-- `plugin_end_zone`: after displaying the template content.
-
-#### render_feed
-
-Triggered when the ATOM or RSS feed is displayed.
-
-Allow to add tags in the feed, either in the header or for each items. Items (links) can also be altered before being rendered.
-
-##### Data
-
-`$data` is an array containing:
-
-  - All templates data, including links.
-  - [Special data](#special-data)
-
-##### Template placeholders
-
-Tags can be added in feeds by adding an entry in `$data['<placeholder>']` array.
-
-List of placeholders:
-
-- `feed_plugins_header`: used as a header tag in the feed.
-
-For each links:
-
-- `feed_plugins`: additional tag for every link entry.
-
-#### save_link
-
-Triggered when a link is save (new link or edit).
-
-Allow to alter the link being saved in the datastore.
-
-##### Data
-
-`$data` is an array containing the link being saved:
-
-- id
-- title
-- url
-- shorturl
-- description
-- private
-- tags
-- created
-- updated
-
-Also [special data](#special-data).
-
-
-#### delete_link
-
-Triggered when a link is deleted.
-
-Allow to execute any action before the link is actually removed from the datastore
-
-##### Data
-
-`$data` is an array containing the link being deleted:
-
-- id
-- title
-- url
-- shorturl
-- description
-- private
-- tags
-- created
-- updated
-
-Also [special data](#special-data).
-
-#### save_plugin_parameters
-
-Triggered when the plugin parameters are saved from the plugin administration page.
-
-Plugins can perform an action every times their settings are updated.
-For example it is used to update the CSS file of the `default_colors` plugins.
-
-##### Data
-
-`$data` input contains the `$_POST` array.
-
-So if the plugin has a parameter called `MYPLUGIN_PARAMETER`,
-the array will contain an entry with `MYPLUGIN_PARAMETER` as a key.
-
-Also [special data](#special-data).
-
-## Guide for template designer
-
-### Plugin administration
-
-Your theme must include a plugin administration page: `pluginsadmin.html`.
-
-> Note: repo's template link needs to be added when the PR is merged.
-
-Use the default one as an example.
-
-Aside from classic RainTPL loops, plugins order is handle by JavaScript. You can just include `plugin_admin.js`, only if:
-
-- you're using a table.
-- you call orderUp() and orderUp() onclick on arrows.
-- you add data-line and data-order to your rows.
-
-Otherwise, you can use your own JS as long as this field is send by the form:
-
-<input type="hidden" name="order_{$key}" value="{$counter}">
-
-### Placeholder system
-
-In order to make plugins work with every custom themes, you need to add variable placeholder in your templates.
-
-It's a RainTPL loop like this:
-
-    {loop="$plugin_variable"}
-        {$value}
-    {/loop}
-
-You should enable `demo_plugin` for testing purpose, since it uses every placeholder available.
-
-### List of placeholders
-
-**page.header.html**
-
-At the end of the menu:
-
-    {loop="$plugins_header.buttons_toolbar"}
-        {$value}
-    {/loop}
-
-At the end of file, before clearing floating blocks:
-
-    {if="!empty($plugin_errors) && $is_logged_in"}
-        <ul class="errors">
-            {loop="plugin_errors"}
-                <li>{$value}</li>
-            {/loop}
-        </ul>
-    {/if}
-
-**includes.html**
-
-At the end of the file:
-
-```html
-{loop="$plugins_includes.css_files"}
-<link type="text/css" rel="stylesheet" href="{$value}#"/>
-{/loop}
-```
-
-**page.footer.html**
-
-At the end of your footer notes:
-
-```html
-{loop="$plugins_footer.text"}
-     {$value}
-{/loop}
-```
-
-At the end of file:
-
-```html
-{loop="$plugins_footer.js_files"}
-     <script src="{$value}#"></script>
-{/loop}
-```
-
-**linklist.html**
-
-After search fields:
-
-```html
-{loop="$plugins_header.fields_toolbar"}
-     {$value}
-{/loop}
-```
-
-Before displaying the link list (after paging):
-
-```html
-{loop="$plugin_start_zone"}
-     {$value}
-{/loop}
-```
-
-For every links (icons):
-
-```html
-{loop="$value.link_plugin"}
-    <span>{$value}</span>
-{/loop}
-```
-
-Before end paging:
-
-```html
-{loop="$plugin_end_zone"}
-     {$value}
-{/loop}
-```
-
-**linklist.paging.html**
-
-After the "private only" icon:
-
-```html
-{loop="$action_plugin"}
-     {$value}
-{/loop}
-```
-
-**editlink.html**
-
-After tags field:
-
-```html
-{loop="$edit_link_plugin"}
-     {$value}
-{/loop}
-```
-
-**tools.html**
-
-After the last tool:
-
-```html
-{loop="$tools_plugin"}
-     {$value}
-{/loop}
-```
-
-**picwall.html**
-
-Top:
-
-```html
-<div id="plugin_zone_start_picwall" class="plugin_zone">
-    {loop="$plugin_start_zone"}
-        {$value}
-    {/loop}
-</div>
-```
-
-Bottom:
-
-```html
-<div id="plugin_zone_end_picwall" class="plugin_zone">
-    {loop="$plugin_end_zone"}
-        {$value}
-    {/loop}
-</div>
-```
-
-**tagcloud.html**
-
-Top:
-
-```html
-   <div id="plugin_zone_start_tagcloud" class="plugin_zone">
-        {loop="$plugin_start_zone"}
-            {$value}
-        {/loop}
-    </div>
-```
-
-Bottom:
-
-```html
-    <div id="plugin_zone_end_tagcloud" class="plugin_zone">
-        {loop="$plugin_end_zone"}
-            {$value}
-        {/loop}
-    </div>
-```
-
-**daily.html**
-
-Top:
-
-```html
-<div id="plugin_zone_start_picwall" class="plugin_zone">
-     {loop="$plugin_start_zone"}
-         {$value}
-     {/loop}
-</div>
-```
-
-After every link:
-
-```html
-<div class="dailyEntryFooter">
-     {loop="$link.link_plugin"}
-          {$value}
-     {/loop}
-</div>
-```
-
-Bottom:
-
-```html
-<div id="plugin_zone_end_picwall" class="plugin_zone">
-    {loop="$plugin_end_zone"}
-        {$value}
-    {/loop}
-</div>
-```
-
-**feed.atom.xml** and **feed.rss.xml**:
-
-In headers tags section:
-```xml
-{loop="$feed_plugins_header"}
-  {$value}
-{/loop}
-```
-
-After each entry:
-```xml
-{loop="$value.feed_plugins"}
-  {$value}
-{/loop}
-```