diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5fe9ab4
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+# Eve_simple_spoiler_ext
diff --git a/simplespoiler/composer.json b/simplespoiler/composer.json
new file mode 100644
index 0000000..1abadbd
--- /dev/null
+++ b/simplespoiler/composer.json
@@ -0,0 +1,45 @@
+{
+    "name": "alfredoramos/simplespoiler",
+    "type": "phpbb-extension",
+    "description": "Simple Spoiler BBCode extension for phpBB",
+    "homepage": "https://github.com/AlfredoRamos/phpbb-ext-simple-spoiler",
+    "version": "2.3.2",
+    "time": "2020-10-12",
+    "keywords": [
+        "phpbb",
+        "extension",
+        "spoiler",
+        "bbcode",
+        "html5"
+    ],
+    "license": "GPL-2.0-only",
+    "authors": [
+        {
+            "name": "Alfredo Ramos",
+            "email": "alfredo.ramos@yandex.com",
+            "homepage": "https://alfredoramos.mx/",
+            "role": "Lead Developer"
+        }
+    ],
+    "require": {
+        "php": "^7.1.3",
+        "composer/installers": "~1.0.0",
+        "phpbb/phpbb": "~3.3.0"
+    },
+    "require-dev": {
+        "phing/phing": "^2.16.0",
+        "pear/archive_tar": "^1.4.0"
+    },
+    "extra": {
+        "display-name": "Simple Spoiler BBCode",
+        "soft-require": {
+            "phpbb/phpbb": "~3.3.0"
+        },
+        "version-check": {
+            "host": "www.phpbb.com",
+            "directory": "/customise/db/extension/simple_spoiler_bbcode",
+            "filename": "version_check",
+            "ssl": true
+        }
+    }
+}
\ No newline at end of file
diff --git a/simplespoiler/config/services.yml b/simplespoiler/config/services.yml
new file mode 100644
index 0000000..9d9ac64
--- /dev/null
+++ b/simplespoiler/config/services.yml
@@ -0,0 +1,21 @@
+services:
+    alfredoramos.simplespoiler.listener:
+        class: alfredoramos\simplespoiler\event\listener
+        arguments:
+            - '@alfredoramos.simplespoiler.helper'
+        tags:
+            - { name: event.listener }
+
+    alfredoramos.simplespoiler.helper:
+        class: alfredoramos\simplespoiler\includes\helper
+        arguments:
+            - '@dbal.conn'
+            - '@filesystem'
+            - '@language'
+            - '@template'
+            - '@config'
+            - '@text_formatter.utils'
+            - '@ext.manager'
+            - '%core.root_path%'
+            - '%core.php_ext%'
+            - '%tables.bbcodes%'
diff --git a/simplespoiler/event/listener.php b/simplespoiler/event/listener.php
new file mode 100644
index 0000000..c903c3f
--- /dev/null
+++ b/simplespoiler/event/listener.php
@@ -0,0 +1,165 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler\event;
+
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use alfredoramos\simplespoiler\includes\helper as helper;
+
+class listener implements EventSubscriberInterface
+{
+	/** @var \alfredoramos\simplespoiler\includes\helper */
+	protected $helper;
+
+	/**
+	 * Listener constructor.
+	 *
+	 * @param \alfredoramos\simplespoiler\includes\helper $helper
+	 *
+	 * @return void
+	 */
+	public function __construct(helper $helper)
+	{
+		$this->helper = $helper;
+	}
+
+	/**
+	 * Assign functions defined in this class to event listeners in the core.
+	 *
+	 * @return array
+	 */
+	static public function getSubscribedEvents()
+	{
+		return [
+			'core.user_setup' => 'user_setup',
+			'core.text_formatter_s9e_configure_after' => 'configure_spoiler',
+			'core.text_formatter_s9e_parse_after' => 'parser_check_message',
+			'core.help_manager_add_block_before' => 'bbcode_help',
+			'core.acp_board_config_edit_add' => 'acp_config_add',
+			'core.posting_modify_template_vars' => 'posting_template_vars',
+			'alfredoramos.seometadata.clean_description_after' => 'clean_description_after'
+		];
+	}
+
+	/**
+	 * Load language files and modify user data on every page.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function user_setup($event)
+	{
+		$lang_set_ext = $event['lang_set_ext'];
+		$lang_set_ext[] = [
+			'ext_name'	=> 'alfredoramos/simplespoiler',
+			'lang_set'	=> 'posting'
+		];
+		$event['lang_set_ext'] = $lang_set_ext;
+	}
+
+	/**
+	 * Add BBCode.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function configure_spoiler($event)
+	{
+		$configurator = $event['configurator'];
+		$spoiler = $this->helper->bbcode_data();
+
+		// Spoiler data must not be empty
+		if (empty($spoiler) ||
+			empty($spoiler['bbcode_tag']) ||
+			empty($spoiler['bbcode_match']) ||
+			empty($spoiler['bbcode_tpl']))
+		{
+			return;
+		}
+
+		// Remove previous definitions
+		unset(
+			$configurator->BBCodes[$spoiler['bbcode_tag']],
+			$configurator->tags[$spoiler['bbcode_tag']]
+		);
+
+		// Create spoiler BBCode
+		$configurator->BBCodes->addCustom(
+			$spoiler['bbcode_match'],
+			$spoiler['bbcode_tpl']
+		);
+	}
+
+	/**
+	 * Remove spoilers that are nested too deep.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function parser_check_message($event)
+	{
+		$event['xml'] = $this->helper->remove_nested_spoilers($event['xml']);
+	}
+
+	/**
+	 * Add a new BBCode FAQ entry.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function bbcode_help($event)
+	{
+		$this->helper->add_bbcode_help($event['block_name']);
+	}
+
+	/**
+	 * Add ACP configuration data.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function acp_config_add($event)
+	{
+		if ($event['mode'] !== 'post')
+		{
+			return;
+		}
+
+		$event['display_vars'] = $this->helper->add_acp_config($event['display_vars']);
+	}
+
+	/**
+	 * Add posting template variables.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function posting_template_vars($event)
+	{
+		$event['page_data'] = $this->helper->posting_template_vars($event['page_data']);
+	}
+
+	/**
+	 * Remove spoilers from post description.
+	 *
+	 * @param object $event
+	 *
+	 * @return void
+	 */
+	public function clean_description_after($event)
+	{
+		$event['description'] = $this->helper->remove_description_spoilers($event['description']);
+	}
+}
diff --git a/simplespoiler/ext.php b/simplespoiler/ext.php
new file mode 100644
index 0000000..809f927
--- /dev/null
+++ b/simplespoiler/ext.php
@@ -0,0 +1,25 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler;
+
+use phpbb\extension\base;
+
+class ext extends base
+{
+	/**
+	 * Check whether or not the extension can be enabled.
+	 *
+	 * @return bool
+	 */
+	public function is_enableable()
+	{
+		return phpbb_version_compare(PHPBB_VERSION, '3.3.0', '>=');
+	}
+}
diff --git a/simplespoiler/includes/helper.php b/simplespoiler/includes/helper.php
new file mode 100644
index 0000000..cf7df34
--- /dev/null
+++ b/simplespoiler/includes/helper.php
@@ -0,0 +1,463 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler\includes;
+
+use phpbb\db\driver\factory as database;
+use phpbb\filesystem\filesystem;
+use phpbb\language\language;
+use phpbb\template\template;
+use phpbb\config\config;
+use phpbb\textformatter\s9e\utils;
+use phpbb\extension\manager as ext_manager;
+
+class helper
+{
+	/** @var \phpbb\db\driver\factory */
+	protected $db;
+
+	/** @var \phpbb\filesystem\filesystem */
+	protected $filesystem;
+
+	/** @var \phpbb\language\language */
+	protected $language;
+
+	/** @var \phpbb\template\template */
+	protected $template;
+
+	/** @var \phpbb\config\config */
+	protected $config;
+
+	/** @var \phpbb\textformatter\s9e\utils */
+	protected $utils;
+
+	/** @var \phpbb\extension\manager */
+	protected $ext_manager;
+
+	/** @var string */
+	protected $root_path;
+
+	/** @var string */
+	protected $php_ext;
+
+	/** @var \acp_bbcodes */
+	protected $acp_bbcodes;
+
+	/** @var array */
+	protected $tables;
+
+	/**
+	 * Constructor of the helper class.
+	 *
+	 * @param \phpbb\db\driver\factory			$db
+	 * @param \phpbb\filesystem\filesystem		$filesystem
+	 * @param \phpbb\language\language			$language
+	 * @param \phpbb\template\template			$template
+	 * @param \phpbb\config\config				$config
+	 * @param \phpbb\textformatter\s9e\utils	$utils
+	 * @param \phpbb\extension\manager			$ext_manager
+	 * @param string							$root_path
+	 * @param string							$php_ext
+	 * @param string							$bbcodes_table
+	 *
+	 * @return void
+	 */
+	public function __construct(database $db, filesystem $filesystem, language $language, template $template, config $config, utils $utils, ext_manager $ext_manager, $root_path, $php_ext, $bbcodes_table)
+	{
+		$this->db = $db;
+		$this->filesystem = $filesystem;
+		$this->language = $language;
+		$this->template = $template;
+		$this->config = $config;
+		$this->utils = $utils;
+		$this->ext_manager = $ext_manager;
+		$this->root_path = $root_path;
+		$this->php_ext = $php_ext;
+
+		// Assign tables
+		if (empty($this->tables))
+		{
+			$this->tables = [
+				'bbcodes' => $bbcodes_table
+			];
+		}
+	}
+
+	/**
+	 * Install the new BBCode adding it in the database or updating it if it already exists.
+	 *
+	 * @return void
+	 */
+	public function install_bbcode()
+	{
+		$data = $this->bbcode_data();
+
+		if (empty($data))
+		{
+			return;
+		}
+
+		// Lazy load BBCodes helper
+		if (!isset($this->acp_bbcodes))
+		{
+			if (!class_exists('acp_bbcodes'))
+			{
+				include($this->root_path . 'includes/acp/acp_bbcodes.' . $this->php_ext);
+			}
+
+			$this->acp_bbcodes = new \acp_bbcodes;
+		}
+
+		// Remove conflicting BBCode
+		$this->remove_bbcode('spoiler=');
+
+		$data['bbcode_id'] = (int) $this->bbcode_id();
+		$data = array_replace(
+			$data,
+			$this->acp_bbcodes->build_regexp(
+				$data['bbcode_match'],
+				$data['bbcode_tpl']
+			)
+		);
+
+		// Get old BBCode ID
+		$old_bbcode_id = (int) $this->bbcode_exists($data['bbcode_tag']);
+
+		// Update or add BBCode
+		if ($old_bbcode_id > NUM_CORE_BBCODES)
+		{
+			$this->update_bbcode($old_bbcode_id, $data);
+		}
+		else
+		{
+			$this->add_bbcode($data);
+		}
+	}
+
+	/**
+	 * Uninstall the BBCode from the database.
+	 *
+	 * @return void
+	 */
+	public function uninstall_bbcode()
+	{
+		$this->remove_bbcode('spoiler');
+	}
+
+	/**
+	 * Check whether BBCode already exists.
+	 *
+	 * @param string $bbcode_tag
+	 *
+	 * @return integer
+	 */
+	public function bbcode_exists($bbcode_tag = '')
+	{
+		if (empty($bbcode_tag))
+		{
+			return -1;
+		}
+
+		$sql = 'SELECT bbcode_id
+			FROM ' . $this->tables['bbcodes'] . '
+			WHERE ' . $this->db->sql_build_array('SELECT', ['bbcode_tag' => $bbcode_tag]);
+		$result = $this->db->sql_query($sql);
+		$bbcode_id = (int) $this->db->sql_fetchfield('bbcode_id');
+		$this->db->sql_freeresult($result);
+
+		// Set invalid index if BBCode doesn't exist to avoid
+		// getting the first record of the table
+		$bbcode_id = $bbcode_id > NUM_CORE_BBCODES ? $bbcode_id : -1;
+
+		return $bbcode_id;
+	}
+
+	/**
+	 * Calculate the ID for the BBCode that is about to be installed.
+	 *
+	 * @return integer
+	 */
+	public function bbcode_id()
+	{
+		$sql = 'SELECT MAX(bbcode_id) as last_id
+			FROM ' . $this->tables['bbcodes'];
+		$result = $this->db->sql_query($sql);
+		$bbcode_id = (int) $this->db->sql_fetchfield('last_id');
+		$this->db->sql_freeresult($result);
+		$bbcode_id += 1;
+
+		if ($bbcode_id <= NUM_CORE_BBCODES)
+		{
+			$bbcode_id = NUM_CORE_BBCODES + 1;
+		}
+
+		return $bbcode_id;
+	}
+
+
+	/**
+	 * Add the BBCode in the database.
+	 *
+	 * @param array $data
+	 *
+	 * @return void
+	 */
+	public function add_bbcode($data = [])
+	{
+		if (empty($data) ||
+			(!empty($data['bbcode_id']) && (int) $data['bbcode_id'] > BBCODE_LIMIT))
+		{
+			return;
+		}
+
+		$sql = 'INSERT INTO ' . $this->tables['bbcodes'] . '
+			' . $this->db->sql_build_array('INSERT', $data);
+		$this->db->sql_query($sql);
+
+	}
+
+	/**
+	 * Remove BBCode by tag.
+	 *
+	 * @param string $bbcode_tag
+	 *
+	 * @return void
+	 */
+	public function remove_bbcode($bbcode_tag = '')
+	{
+		if (empty($bbcode_tag))
+		{
+			return;
+		}
+
+		$bbcode_id = (int) $this->bbcode_exists($bbcode_tag);
+
+		// Remove only if exists
+		if ($bbcode_id > NUM_CORE_BBCODES)
+		{
+			$sql = 'DELETE FROM ' . $this->tables['bbcodes'] . '
+				WHERE bbcode_id = ' . $bbcode_id;
+			$this->db->sql_query($sql);
+		}
+	}
+
+	/**
+	 * Update BBCode data if it already exists.
+	 *
+	 * @param integer	$bbcode_id
+	 * @param array		$data
+	 *
+	 * @return void
+	 */
+	public function update_bbcode($bbcode_id = -1, $data = [])
+	{
+		$bbcode_id = (int) $bbcode_id;
+
+		if ($bbcode_id <= NUM_CORE_BBCODES || empty($data))
+		{
+			return;
+		}
+
+		unset($data['bbcode_id']);
+
+		$sql = 'UPDATE ' . $this->tables['bbcodes'] . '
+			SET ' . $this->db->sql_build_array('UPDATE', $data) . '
+			WHERE bbcode_id = ' . $bbcode_id;
+		$this->db->sql_query($sql);
+	}
+
+	/**
+	 * Add a new entry in the BBCode FAQ.
+	 *
+	 * @param string $block_name
+	 *
+	 * @return void
+	 */
+	public function add_bbcode_help($block_name = '')
+	{
+		if (empty($block_name) || $block_name !== 'HELP_BBCODE_BLOCK_OTHERS')
+		{
+			return;
+		}
+
+		// Load language keys
+		$this->language->add_lang('help/bbcode', 'alfredoramos/simplespoiler');
+
+		// FAQ helper, it just stores language keys
+		$faq = [
+			'title' => 'HELP_BBCODE_BLOCK_SPOILERS',
+			'questions' => [
+				'HELP_BBCODE_SPOILERS_BASIC_QUESTION' => 'HELP_BBCODE_SPOILERS_BASIC_ANSWER',
+				'HELP_BBCODE_SPOILERS_TITLE_QUESTION' => 'HELP_BBCODE_SPOILERS_TITLE_ANSWER'
+			]
+		];
+
+		// Add help block
+		$this->template->assign_block_vars('faq_block', [
+			'BLOCK_TITLE'	=> $this->language->lang($faq['title']),
+			'SWITCH_COLUMN'	=> false
+		]);
+
+		// Arguments for functions generate_text_for_{storage,display}()
+		$uid = $bitfield = $flags = null;
+
+		// Generate questions and answers
+		foreach ($faq['questions'] as $key => $value)
+		{
+			$has_title = (strpos($key, 'TITLE') !== false);
+			$text = sprintf(
+				'[spoiler%2$s]%1$s[/spoiler]',
+				$this->language->lang('HELP_BBCODE_SPOILERS_DEMO_BODY'),
+				$has_title ? sprintf(' title=%s', $this->language->lang('HELP_BBCODE_SPOILERS_DEMO_TITLE')) : ''
+			);
+			generate_text_for_storage($text, $uid, $bitfield, $flags, true, true, true);
+			$parsed_text = generate_text_for_display($text, $uid, $bitfield, $flags);
+
+			$this->template->assign_block_vars('faq_block.faq_row', [
+				'FAQ_QUESTION'	=> $this->language->lang($key),
+				'FAQ_ANSWER'	=> $this->language->lang(
+					$value,
+					$parsed_text,
+					$this->language->lang('HELP_BBCODE_SPOILERS_DEMO_BODY'),
+					($has_title ? $this->language->lang('HELP_BBCODE_SPOILERS_DEMO_TITLE') : null)
+				)
+			]);
+		}
+	}
+
+	/**
+	 * Add ACP configuration data.
+	 *
+	 * @param array $display_vars
+	 *
+	 * @return array
+	 */
+	public function add_acp_config($display_vars = [])
+	{
+		if (empty($display_vars) || empty($display_vars['vars']))
+		{
+			return [];
+		}
+
+		if (!function_exists('phpbb_insert_config_array'))
+		{
+			include($this->root_path . 'includes/functions_acp.' . $this->php_ext);
+		}
+
+		$display_vars['vars'] = phpbb_insert_config_array(
+			$display_vars['vars'],
+			[
+				'max_spoiler_depth' => [
+					'lang' => 'SPOILER_DEPTH_LIMIT',
+					'validate' => 'int:0:9999',
+					'type' => 'number:0:9999',
+					'explain' => true
+				]
+			],
+			['after' => 'max_quote_depth']
+		);
+
+		return $display_vars;
+	}
+
+	/**
+	 * Remove nested spoilers at given depth.
+	 *
+	 * @param string $xml
+	 *
+	 * @return string
+	 */
+	public function remove_nested_spoilers($xml = '')
+	{
+		if (empty($xml))
+		{
+			return '';
+		}
+
+		$max_depth = (int) $this->config['max_spoiler_depth'];
+
+		if ($max_depth <= 0)
+		{
+			return $xml;
+		}
+
+		return $this->utils->remove_bbcode($xml, 'SPOILER', $max_depth);
+	}
+
+	/**
+	 * Remove spoilers from post description.
+	 *
+	 * @param string $description
+	 *
+	 * @see \alfredoramos\seometadata\includes\helper::clean_description()
+	 *
+	 * @return string
+	 */
+	public function remove_description_spoilers($description = '')
+	{
+		if (empty($description))
+		{
+			return '';
+		}
+
+		// Remove spoilers at any depth
+		return $this->utils->remove_bbcode($description, 'SPOILER', 0);
+	}
+
+	/**
+	 * Set template variable for ABBC3 icon type.
+	 *
+	 * @param array $template_vars
+	 *
+	 * @return array
+	 */
+	public function posting_template_vars($template_vars = [])
+	{
+		if (empty($template_vars) || !$this->ext_manager->is_enabled('vse/abbc3') || empty($this->config['abbc3_icons_type']))
+		{
+			return $template_vars;
+		}
+
+		return array_merge($template_vars, [
+			'SIMPLE_SPOILER_ABBC3_ICON_TYPE' => $this->config['abbc3_icons_type']
+		]);
+	}
+
+	/**
+	 * BBCode data used in the migration files.
+	 *
+	 * @return array
+	 */
+	public function bbcode_data()
+	{
+		// Return absolute path if file exists
+		$xsl = $this->filesystem->realpath(
+			__DIR__ . '/../styles/all/template/spoiler.xsl'
+		);
+
+		// Store the (trimmed) file content if it is readable
+		$template = $this->filesystem->is_readable($xsl) ? trim(file_get_contents($xsl)) : '';
+
+		// The spoiler template should not be empty
+		if (empty($template))
+		{
+			return [];
+		}
+
+		return [
+			'bbcode_tag'	=> 'spoiler',
+			'bbcode_match'	=> '[spoiler={PARSE=/(?<title>.+)/} title={TEXT2;optional}]{TEXT1}[/spoiler]',
+			'bbcode_tpl'	=> $template,
+
+			// Kept for backwards compatibility
+			'bbcode_helpline'		=> 'SPOILER_HELPLINE',
+			'display_on_posting'	=> 1
+		];
+	}
+}
diff --git a/simplespoiler/language/en/acp/info_acp_settings.php b/simplespoiler/language/en/acp/info_acp_settings.php
new file mode 100644
index 0000000..d635434
--- /dev/null
+++ b/simplespoiler/language/en/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Maximum nesting depth for spoilers',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Maximum spoiler nesting depth in a post. Set to <samp>0</samp> for unlimited depth.'
+]);
diff --git a/simplespoiler/language/en/help/bbcode.php b/simplespoiler/language/en/help/bbcode.php
new file mode 100644
index 0000000..1961082
--- /dev/null
+++ b/simplespoiler/language/en/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Generating Spoilers',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Adding a spoiler into a post',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'A basic spoiler consist in a text wrapped in <strong>[spoiler][/spoiler]</strong>. For example:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>This would generate:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Adding a spoiler with title into a post',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'A spoiler can optionally show a custom title, to do so the text need to be wrapped in <strong>[spoiler title=][/spoiler]</strong>. For example:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>This would generate:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Plot summary',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Details about the movie narrative'
+]);
diff --git a/simplespoiler/language/en/posting.php b/simplespoiler/language/en/posting.php
new file mode 100644
index 0000000..a6afed1
--- /dev/null
+++ b/simplespoiler/language/en/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Usage: [spoiler]text[/spoiler] or [spoiler title=title]text[/spoiler]'
+]);
diff --git a/simplespoiler/language/es/acp/info_acp_settings.php b/simplespoiler/language/es/acp/info_acp_settings.php
new file mode 100644
index 0000000..01e0550
--- /dev/null
+++ b/simplespoiler/language/es/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Profundidad máxima de anidamiento para spoilers',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Profundidad máxima de anidamiento para spoilers por mensaje. Ajuste este valor en <samp>0</samp> para una profundidad ilimitada.'
+]);
diff --git a/simplespoiler/language/es/help/bbcode.php b/simplespoiler/language/es/help/bbcode.php
new file mode 100644
index 0000000..2ab612e
--- /dev/null
+++ b/simplespoiler/language/es/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Creando Spoilers',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Agregando un spoiler en un mensaje',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Un spoiler básico consiste en texto encapsulado entre las etiquetas <strong>[spoiler][/spoiler]</strong>. Por ejemplo:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Esto generará:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Agregando un spoiler con título en un mensaje',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Un spoiler opcionalmente puede mostrar un título personalizado, para hacerlo el texto necesita ser encapsulado entre las etiquetas <strong>[spoiler title=][/spoiler]</strong>. Por ejemplo:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Esto generará:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Resumen de la trama',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Detalles de la narrativa de la película'
+]);
diff --git a/simplespoiler/language/es/posting.php b/simplespoiler/language/es/posting.php
new file mode 100644
index 0000000..b1182e2
--- /dev/null
+++ b/simplespoiler/language/es/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Uso: [spoiler]texto[/spoiler] o [spoiler title=título]texto[/spoiler]'
+]);
diff --git a/simplespoiler/language/es_x_tu/acp/info_acp_settings.php b/simplespoiler/language/es_x_tu/acp/info_acp_settings.php
new file mode 100644
index 0000000..b009348
--- /dev/null
+++ b/simplespoiler/language/es_x_tu/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Profundidad máxima de anidamiento para spoilers',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Profundidad máxima de anidamiento para spoilers por mensaje. Ajusta este valor en <samp>0</samp> para una profundidad ilimitada.'
+]);
diff --git a/simplespoiler/language/es_x_tu/help/bbcode.php b/simplespoiler/language/es_x_tu/help/bbcode.php
new file mode 100644
index 0000000..2ab612e
--- /dev/null
+++ b/simplespoiler/language/es_x_tu/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Creando Spoilers',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Agregando un spoiler en un mensaje',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Un spoiler básico consiste en texto encapsulado entre las etiquetas <strong>[spoiler][/spoiler]</strong>. Por ejemplo:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Esto generará:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Agregando un spoiler con título en un mensaje',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Un spoiler opcionalmente puede mostrar un título personalizado, para hacerlo el texto necesita ser encapsulado entre las etiquetas <strong>[spoiler title=][/spoiler]</strong>. Por ejemplo:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Esto generará:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Resumen de la trama',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Detalles de la narrativa de la película'
+]);
diff --git a/simplespoiler/language/es_x_tu/posting.php b/simplespoiler/language/es_x_tu/posting.php
new file mode 100644
index 0000000..b1182e2
--- /dev/null
+++ b/simplespoiler/language/es_x_tu/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Uso: [spoiler]texto[/spoiler] o [spoiler title=título]texto[/spoiler]'
+]);
diff --git a/simplespoiler/language/fr/acp/info_acp_settings.php b/simplespoiler/language/fr/acp/info_acp_settings.php
new file mode 100644
index 0000000..d98a920
--- /dev/null
+++ b/simplespoiler/language/fr/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Profondeur d\'imbrication maximale pour les spoilers',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Profondeur maximale d\'imbrication du spoiler dans un post. Définissez à <samp>0</samp> pour une profondeur illimitée.'
+]);
diff --git a/simplespoiler/language/fr/help/bbcode.php b/simplespoiler/language/fr/help/bbcode.php
new file mode 100644
index 0000000..20cf82d
--- /dev/null
+++ b/simplespoiler/language/fr/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Génération de spoilers',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Ajouter un spoiler dans un message',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Un spoiler de base consiste en un texte contenu dans une balise <strong>[spoiler][/spoiler]</strong>. Par exemple:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Cela générera<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Ajouter un spoiler avec un titre dans un message',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Un spoiler peut éventuellement afficher un titre personnalisé, pour ce faire, le texte doit être contenu dans <strong>[spoiler title=][/spoiler]</strong>. Par exemple:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Cela générera<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Résumé de l\'intrigue',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Détails sur le récit du film'
+]);
diff --git a/simplespoiler/language/fr/posting.php b/simplespoiler/language/fr/posting.php
new file mode 100644
index 0000000..7d4eff8
--- /dev/null
+++ b/simplespoiler/language/fr/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Utilisation : [spoiler]text[/spoiler] ou [spoiler title=title]text[/spoiler]'
+]);
diff --git a/simplespoiler/language/he/acp/info_acp_settings.php b/simplespoiler/language/he/acp/info_acp_settings.php
new file mode 100644
index 0000000..bf07093
--- /dev/null
+++ b/simplespoiler/language/he/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'גודל מקסימלי לתיבות ספוילרים',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'הגודל המקסימלי של תיבות ספויילרים בהודעה. הגדר כ <samp>0</samp> כדי לבטל את ההגבלה.'
+]);
diff --git a/simplespoiler/language/he/help/bbcode.php b/simplespoiler/language/he/help/bbcode.php
new file mode 100644
index 0000000..69aeffb
--- /dev/null
+++ b/simplespoiler/language/he/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'מייצר ספויילרים',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'הוסף ספויילר להודעה',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'ספויילר בסיסי מוקף בתגים <strong>[spoiler][/spoiler]</strong>. לדוגמה:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br> מייצר:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'הוספת ספויילר עם כותרת לתוך ההודעה',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'ספויילר יכול להכין כותרת מותאמת אישית, כדי לעשות זאת צריך שהטקסט יהיה מוקף ב<strong>[spoiler title=][/spoiler]</strong>. לדוגמה:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br> יציג על המסך:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'תקציר העלילה',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'פרטים על עלילת הסרט'
+]);
diff --git a/simplespoiler/language/he/posting.php b/simplespoiler/language/he/posting.php
new file mode 100644
index 0000000..f481586
--- /dev/null
+++ b/simplespoiler/language/he/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'ספויילר',
+	'SPOILER_HELPLINE'	=> 'שימוש: [spoiler]טקסט[/spoiler] או [spoiler title=title]טקסט[/spoiler]'
+]);
diff --git a/simplespoiler/language/nl/acp/info_acp_settings.php b/simplespoiler/language/nl/acp/info_acp_settings.php
new file mode 100644
index 0000000..e8a9b8f
--- /dev/null
+++ b/simplespoiler/language/nl/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Maximale nestdiepte voor spoilers',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Maximale spoiler nestdiepte in een bericht. Zet op <samp>0</samp> voor ongelimiteerde diepte.'
+]);
diff --git a/simplespoiler/language/nl/help/bbcode.php b/simplespoiler/language/nl/help/bbcode.php
new file mode 100644
index 0000000..e88d7c1
--- /dev/null
+++ b/simplespoiler/language/nl/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Spoilers aanmaken',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Een spoiler toevoegen aan een bericht',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Een basisspoiler bestaat uit een tekst ingepakt in <strong>[spoiler][/spoiler]</strong>. Bijvoorbeeld:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Dit zou genereren:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Een spoiler met titel toevoegen aan een bericht',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Een spoiler kan optioneel een aangepaste titel tonen, daarvoor moet de tekst worden ingepakt in <strong>[spoiler title=][/spoiler]</strong>. Bijvoorbeeld:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Dit zou genereren:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Plotsamenvatting',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Details over het verhaal van de film'
+]);
diff --git a/simplespoiler/language/nl/posting.php b/simplespoiler/language/nl/posting.php
new file mode 100644
index 0000000..8b7c6d4
--- /dev/null
+++ b/simplespoiler/language/nl/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Gebruik: [spoiler]tekst[/spoiler] of [spoiler title=tittel]tekst[/spoiler]'
+]);
diff --git a/simplespoiler/language/pt_br/acp/info_acp_settings.php b/simplespoiler/language/pt_br/acp/info_acp_settings.php
new file mode 100644
index 0000000..096c71f
--- /dev/null
+++ b/simplespoiler/language/pt_br/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Número máximo de spoilers por post',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Número máximo de spoilers por post, sendo <samp>0</samp> igual a um valor ilimitado.'
+]);
diff --git a/simplespoiler/language/pt_br/help/bbcode.php b/simplespoiler/language/pt_br/help/bbcode.php
new file mode 100644
index 0000000..1a93124
--- /dev/null
+++ b/simplespoiler/language/pt_br/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Gerando Spoilers',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Adicionando um spoiler em um post',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Um spoiler básico consiste em um texto contido em <strong>[spoiler][/spoiler]</strong>. Por exemplo:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Isso geraria:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Adicionando um spoiler com título em um post',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Um spoiler pode, opcionalmente, mostrar um título personalizado. Para isso, o texto precisa ser agrupado em <strong>[spoiler title=][/spoiler]</strong>. Por exemplo:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Isso geraria:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Resumo do enredo',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Detalhes sobre a narrativa do filme'
+]);
diff --git a/simplespoiler/language/pt_br/posting.php b/simplespoiler/language/pt_br/posting.php
new file mode 100644
index 0000000..62d5465
--- /dev/null
+++ b/simplespoiler/language/pt_br/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Spoiler',
+	'SPOILER_HELPLINE'	=> 'Uso: [spoiler]texto[/spoiler] ou [spoiler=título]texto[/spoiler]'
+]);
diff --git a/simplespoiler/language/ru/acp/info_acp_settings.php b/simplespoiler/language/ru/acp/info_acp_settings.php
new file mode 100644
index 0000000..5c34eb5
--- /dev/null
+++ b/simplespoiler/language/ru/acp/info_acp_settings.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER_DEPTH_LIMIT' => 'Максимальная глубина вложенности для спойлеров',
+	'SPOILER_DEPTH_LIMIT_EXPLAIN' => 'Максимальная глубина вложенности для спойлеров в сообщениях. Введите <samp>0</samp> для снятия ограничений.'
+]);
diff --git a/simplespoiler/language/ru/help/bbcode.php b/simplespoiler/language/ru/help/bbcode.php
new file mode 100644
index 0000000..0d905a0
--- /dev/null
+++ b/simplespoiler/language/ru/help/bbcode.php
@@ -0,0 +1,37 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'HELP_BBCODE_BLOCK_SPOILERS' => 'Создание спойлеров',
+
+	'HELP_BBCODE_SPOILERS_BASIC_QUESTION'	=> 'Добавление спойлера в сообщение',
+	'HELP_BBCODE_SPOILERS_BASIC_ANSWER'		=> 'Простой спойлер состоит из текста, заключенного в теги <strong>[spoiler][/spoiler]</strong>. Например:<br><br><strong>[spoiler]</strong>%2$s<strong>[/spoiler]</strong><br><br>Это выведет:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_TITLE_QUESTION'	=> 'Добавление спойлера с названием в сообщение',
+	'HELP_BBCODE_SPOILERS_TITLE_ANSWER'		=> 'Спойлер может иметь произвольное название, для этого текст заключается в теги <strong>[spoiler title=][/spoiler]</strong>. Например:<br><br><strong>[spoiler title=</strong>%3$s<strong>]</strong>%2$s<strong>[/spoiler]</strong><br><br>Это выведет:<br>%1$s',
+
+	'HELP_BBCODE_SPOILERS_DEMO_TITLE'	=> 'Краткий сюжет',
+	'HELP_BBCODE_SPOILERS_DEMO_BODY'	=> 'Подробности о сюжете фильма'
+]);
diff --git a/simplespoiler/language/ru/posting.php b/simplespoiler/language/ru/posting.php
new file mode 100644
index 0000000..4b98786
--- /dev/null
+++ b/simplespoiler/language/ru/posting.php
@@ -0,0 +1,29 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+/**
+ * @ignore
+ */
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+ * @ignore
+ */
+if (empty($lang) || !is_array($lang))
+{
+	$lang = [];
+}
+
+$lang = array_merge($lang, [
+	'SPOILER'			=> 'Спойлер',
+	'SPOILER_HELPLINE'	=> 'Спойлер: [spoiler]текст[/spoiler] или [spoiler title=заголовок]текст[/spoiler]'
+]);
diff --git a/simplespoiler/license.txt b/simplespoiler/license.txt
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/simplespoiler/license.txt
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/simplespoiler/migrations/v10x/m1_spoiler_data.php b/simplespoiler/migrations/v10x/m1_spoiler_data.php
new file mode 100644
index 0000000..a66a205
--- /dev/null
+++ b/simplespoiler/migrations/v10x/m1_spoiler_data.php
@@ -0,0 +1,79 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler\migrations\v10x;
+
+use phpbb\db\migration\container_aware_migration;
+use alfredoramos\simplespoiler\includes\helper as spoiler_helper;
+
+class m1_spoiler_data extends container_aware_migration
+{
+	/** @var \alfredoramos\simplespoiler\includes\helper */
+	private $spoiler = null;
+
+	/**
+	 * Install BBCode in database.
+	 *
+	 * @return array
+	 */
+	public function update_data()
+	{
+		return [
+			[
+				'custom',
+				[
+					[$this->get_helper(), 'install_bbcode']
+				]
+			]
+		];
+	}
+
+	/**
+	 * Uninstall BBCode from database.
+	 *
+	 * @return array
+	 */
+	public function revert_data()
+	{
+		return [
+			[
+				'custom',
+				[
+					[$this->get_helper(), 'uninstall_bbcode']
+				]
+			]
+		];
+	}
+
+	/**
+	 * Spoiler helper.
+	 *
+	 * @return \alfredoramos\simplespoiler\includes\helper
+	 */
+	private function get_helper()
+	{
+		if ($this->spoiler === null)
+		{
+			$this->spoiler = new spoiler_helper(
+				$this->container->get('dbal.conn'),
+				$this->container->get('filesystem'),
+				$this->container->get('language'),
+				$this->container->get('template'),
+				$this->container->get('config'),
+				$this->container->get('text_formatter.utils'),
+				$this->container->get('ext.manager'),
+				$this->container->getParameter('core.root_path'),
+				$this->container->getParameter('core.php_ext'),
+				$this->container->getParameter('tables.bbcodes')
+			);
+		}
+
+		return $this->spoiler;
+	}
+}
diff --git a/simplespoiler/migrations/v13x/m1_spoiler_data.php b/simplespoiler/migrations/v13x/m1_spoiler_data.php
new file mode 100644
index 0000000..e84dcdf
--- /dev/null
+++ b/simplespoiler/migrations/v13x/m1_spoiler_data.php
@@ -0,0 +1,50 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler\migrations\v13x;
+
+use phpbb\db\migration\migration;
+
+class m1_spoiler_data extends migration
+{
+	/**
+	 * Migration dependencies.
+	 *
+	 * @return array
+	 */
+	static public function depends_on()
+	{
+		return ['\alfredoramos\simplespoiler\migrations\v10x\m1_spoiler_data'];
+	}
+
+	/**
+	 * Check if it's already installed.
+	 *
+	 * @return bool
+	 */
+	public function effectively_installed()
+	{
+		return isset($this->config['max_spoiler_depth']);
+	}
+
+	/**
+	 * Add Spoiler configuration.
+	 *
+	 * @return array
+	 */
+	public function update_data()
+	{
+		return [
+			[
+				'config.add',
+				['max_spoiler_depth', 3]
+			]
+		];
+	}
+}
diff --git a/simplespoiler/migrations/v20x/m1_spoiler_data.php b/simplespoiler/migrations/v20x/m1_spoiler_data.php
new file mode 100644
index 0000000..5c54b06
--- /dev/null
+++ b/simplespoiler/migrations/v20x/m1_spoiler_data.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+namespace alfredoramos\simplespoiler\migrations\v20x;
+
+use phpbb\db\migration\container_aware_migration;
+use alfredoramos\simplespoiler\includes\helper as spoiler_helper;
+
+class m1_spoiler_data extends container_aware_migration
+{
+	/** @var \alfredoramos\simplespoiler\includes\helper */
+	private $spoiler = null;
+
+	/**
+	 * Migration dependencies.
+	 *
+	 * @return array
+	 */
+	static public function depends_on()
+	{
+		return ['\alfredoramos\simplespoiler\migrations\v13x\m1_spoiler_data'];
+	}
+
+	/**
+	 * Install BBCode in database.
+	 *
+	 * @return array
+	 */
+	public function update_data()
+	{
+		return [
+			[
+				'custom',
+				[
+					[$this->get_helper(), 'uninstall_bbcode']
+				]
+			]
+		];
+	}
+
+	/**
+	 * Spoiler helper.
+	 *
+	 * @return \alfredoramos\simplespoiler\includes\helper
+	 */
+	private function get_helper()
+	{
+		if ($this->spoiler === null)
+		{
+			$this->spoiler = new spoiler_helper(
+				$this->container->get('dbal.conn'),
+				$this->container->get('filesystem'),
+				$this->container->get('language'),
+				$this->container->get('template'),
+				$this->container->get('config'),
+				$this->container->get('text_formatter.utils'),
+				$this->container->get('ext.manager'),
+				$this->container->getParameter('core.root_path'),
+				$this->container->getParameter('core.php_ext'),
+				$this->container->getParameter('tables.bbcodes')
+			);
+		}
+
+		return $this->spoiler;
+	}
+}
diff --git a/simplespoiler/styles/all/template/event/ext_quickreply_editor_buttons_custom_tags_before.html b/simplespoiler/styles/all/template/event/ext_quickreply_editor_buttons_custom_tags_before.html
new file mode 100644
index 0000000..9795502
--- /dev/null
+++ b/simplespoiler/styles/all/template/event/ext_quickreply_editor_buttons_custom_tags_before.html
@@ -0,0 +1 @@
+{% include '@alfredoramos_simplespoiler/spoiler_button.html' ignore missing %}
diff --git a/simplespoiler/styles/all/template/event/overall_footer_body_after.html b/simplespoiler/styles/all/template/event/overall_footer_body_after.html
new file mode 100644
index 0000000..50ebc4d
--- /dev/null
+++ b/simplespoiler/styles/all/template/event/overall_footer_body_after.html
@@ -0,0 +1,12 @@
+{% if not INCLUDED_DETAILS_POLYFILL_JS %}
+{%- if S_ALLOW_CDN -%}
+{% INCLUDEJS 'https://unpkg.com/details-element-polyfill@2.4.0/dist/details-element-polyfill.js' %}
+{%- else -%}
+{% INCLUDEJS '@alfredoramos_simplespoiler/js/details-element-polyfill.min.js' %}
+{%- endif -%}
+{%- set INCLUDED_DETAILS_POLYFILL_JS = true -%}
+{% endif %}
+{% if not INCLUDED_SPOILER_JS %}
+{% INCLUDEJS '@alfredoramos_simplespoiler/js/spoiler.min.js' %}
+{%- set INCLUDED_SPOILER_JS = true -%}
+{% endif %}
diff --git a/simplespoiler/styles/all/template/event/overall_header_head_append.html b/simplespoiler/styles/all/template/event/overall_header_head_append.html
new file mode 100644
index 0000000..b2a2989
--- /dev/null
+++ b/simplespoiler/styles/all/template/event/overall_header_head_append.html
@@ -0,0 +1,6 @@
+{% if not INCLUDED_SPOILER_CSS %}
+{% INCLUDECSS '@alfredoramos_simplespoiler/css/common.min.css' %}
+{% INCLUDECSS '@alfredoramos_simplespoiler/css/style.min.css' %}
+{% INCLUDECSS '@alfredoramos_simplespoiler/css/colors.min.css' %}
+{%- set INCLUDED_SPOILER_CSS = true -%}
+{% endif %}
diff --git a/simplespoiler/styles/all/template/event/posting_editor_buttons_custom_tags_before.html b/simplespoiler/styles/all/template/event/posting_editor_buttons_custom_tags_before.html
new file mode 100644
index 0000000..9795502
--- /dev/null
+++ b/simplespoiler/styles/all/template/event/posting_editor_buttons_custom_tags_before.html
@@ -0,0 +1 @@
+{% include '@alfredoramos_simplespoiler/spoiler_button.html' ignore missing %}
diff --git a/simplespoiler/styles/all/template/event/vse_abbc3_posting_editor_buttons_custom_tags_before.html b/simplespoiler/styles/all/template/event/vse_abbc3_posting_editor_buttons_custom_tags_before.html
new file mode 100644
index 0000000..c946a70
--- /dev/null
+++ b/simplespoiler/styles/all/template/event/vse_abbc3_posting_editor_buttons_custom_tags_before.html
@@ -0,0 +1 @@
+{% include '@alfredoramos_simplespoiler/abbc3_spoiler_button.html' ignore missing %}
diff --git a/simplespoiler/styles/all/template/spoiler.xsl b/simplespoiler/styles/all/template/spoiler.xsl
new file mode 100644
index 0000000..482436d
--- /dev/null
+++ b/simplespoiler/styles/all/template/spoiler.xsl
@@ -0,0 +1,23 @@
+<details class="spoiler">
+	<summary class="spoiler-header">
+		<span class="spoiler-title">
+			<xsl:choose>
+				<xsl:when test="@title and string-length(normalize-space(@title)) > 0">
+					<xsl:choose>
+						<xsl:when test="string-length(normalize-space(@title)) > 140">
+							<xsl:value-of select="concat(normalize-space(substring(normalize-space(@title), 0, 140)), '…')"/>
+						</xsl:when>
+						<xsl:otherwise>
+							<xsl:value-of select="normalize-space(@title)"/>
+						</xsl:otherwise>
+					</xsl:choose>
+				</xsl:when>
+				<xsl:otherwise>{L_SPOILER}</xsl:otherwise>
+			</xsl:choose>
+		</span>
+		<span class="spoiler-status">
+			<i class="icon fa-fw fa-eye" aria-hidden="true"></i>
+		</span>
+	</summary>
+	<div class="spoiler-body"><xsl:apply-templates/></div>
+</details>
diff --git a/simplespoiler/styles/all/theme/css/common.css b/simplespoiler/styles/all/theme/css/common.css
new file mode 100644
index 0000000..70ada72
--- /dev/null
+++ b/simplespoiler/styles/all/theme/css/common.css
@@ -0,0 +1,65 @@
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+.spoiler {
+	overflow: hidden;
+}
+
+.spoiler-header {
+	display: -ms-flexbox;
+	display: flex;
+	-ms-flex-wrap: wrap;
+	flex-wrap: wrap;
+	-ms-flex-align: start;
+	align-items: flex-start;
+	-ms-flex-pack: justify;
+	justify-content: space-between;
+	cursor: pointer;
+}
+
+.spoiler-title {
+	overflow: hidden;
+	white-space: nowrap;
+	text-overflow: ellipsis;
+	-ms-flex-preferred-size: 0;
+	flex-basis: 0;
+	-ms-flex-positive: 1;
+	flex-grow: 1;
+	min-width: 0;
+	max-width: 100%;
+}
+
+.spoiler-status {
+	margin-left: 3px;
+	-ms-flex: 0 0 auto;
+	flex: 0 0 auto;
+	width: auto;
+	max-width: 100%;
+	-ms-flex-item-align: end;
+	align-self: flex-end;
+	text-align: center;
+}
+
+.faq details.spoiler {
+	max-width: 650px;
+}
+
+/* Polyfill */
+.spoiler-header::before {
+	padding-right: 0;
+	font-size: 1em;
+}
+
+.spoiler-header::before,
+.spoiler[open] > .spoiler-header::before {
+	content: '';
+}
+
+/* Chrome */
+.spoiler-header::-webkit-details-marker {
+	display: none;
+}
diff --git a/simplespoiler/styles/all/theme/css/common.min.css b/simplespoiler/styles/all/theme/css/common.min.css
new file mode 100644
index 0000000..8d6d522
--- /dev/null
+++ b/simplespoiler/styles/all/theme/css/common.min.css
@@ -0,0 +1 @@
+.spoiler{overflow:hidden}.spoiler-header{display:-ms-flexbox;display:flex;-ms-flex-wrap:wrap;flex-wrap:wrap;-ms-flex-align:start;align-items:flex-start;-ms-flex-pack:justify;justify-content:space-between;cursor:pointer}.spoiler-title{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;-ms-flex-preferred-size:0;flex-basis:0;-ms-flex-positive:1;flex-grow:1;min-width:0;max-width:100%}.spoiler-status{margin-left:3px;-ms-flex:0 0 auto;flex:0 0 auto;width:auto;max-width:100%;-ms-flex-item-align:end;align-self:flex-end;text-align:center}.faq details.spoiler{max-width:650px}.spoiler-header::before{padding-right:0;font-size:1em}.spoiler-header::before,.spoiler[open]>.spoiler-header::before{content:''}.spoiler-header::-webkit-details-marker{display:none}
diff --git a/simplespoiler/styles/all/theme/images/eye-invisible.svg b/simplespoiler/styles/all/theme/images/eye-invisible.svg
new file mode 100644
index 0000000..5d2a6f1
--- /dev/null
+++ b/simplespoiler/styles/all/theme/images/eye-invisible.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><path fill="#405866" d="M59.994 29.998c.034-.578-.088-1.16-.433-1.647-4.057-5.723-8.759-10.83-14.604-14.95-7.915-5.357-16.99-6.616-25.794-2.436-3.906 1.852-7.413 4.644-10.487 7.564-2.992 2.838-6.217 6.276-8.237 9.827a3.398 3.398 0 00-.437 1.646h.003c-.033.578.089 1.161.434 1.646C4.498 37.37 9.2 42.478 15.044 46.6c7.915 5.353 16.99 6.615 25.794 2.434 3.905-1.852 7.411-4.644 10.486-7.555 2.992-2.838 6.219-6.277 8.237-9.828A3.389 3.389 0 0060 30.006h-.006"/><path fill="#fff" d="M52.913 29.998c.026-.443-.07-.89-.332-1.257-3.101-4.377-6.694-8.278-11.157-11.424-6.048-4.092-12.98-5.05-19.706-1.86-2.983 1.414-5.666 3.548-8.013 5.775C11.42 23.4 8.96 26.03 7.41 28.742A2.577 2.577 0 007.077 30h.005c-.028.44.068.887.33 1.257 3.101 4.374 6.694 8.277 11.158 11.422 6.048 4.091 12.979 5.053 19.707 1.861 2.982-1.415 5.666-3.549 8.011-5.775 2.287-2.167 4.752-4.798 6.294-7.509a2.59 2.59 0 00.334-1.257h-.003"/><path fill="#ccc" d="M20.503 42.68c-4.466-3.145-8.058-7.047-11.157-11.421-.264-.372-.358-.819-.332-1.257h-.003c0-.443.12-.886.333-1.257 1.543-2.713 4.008-5.343 6.292-7.51 2.35-2.227 5.03-4.362 8.013-5.774 2.4-1.14 4.822-1.745 7.226-1.875-3.028-.161-6.112.428-9.156 1.875-2.983 1.412-5.667 3.547-8.013 5.774-2.285 2.167-4.745 4.796-6.295 7.51a2.571 2.571 0 00-.333 1.257h.005c-.028.438.068.885.33 1.257 3.101 4.374 6.694 8.277 11.158 11.422 3.892 2.632 8.148 3.966 12.48 3.736-3.66-.196-7.238-1.496-10.548-3.736"/><path fill="#bcbec0" d="M39.795 42.69c4.466-3.149 8.058-7.049 11.157-11.425.266-.369.359-.815.334-1.255h.002c0-.443-.124-.884-.334-1.258-1.543-2.713-4.009-5.343-6.292-7.51-2.351-2.224-5.03-4.357-8.014-5.774-2.399-1.138-4.823-1.744-7.225-1.875 3.029-.16 6.112.43 9.156 1.875 2.983 1.417 5.657 3.549 8.01 5.775 2.286 2.167 4.752 4.796 6.293 7.509.215.373.337.815.337 1.258h-.008c.03.44-.068.886-.33 1.255-3.099 4.376-6.692 8.277-11.155 11.425-3.89 2.632-8.149 3.965-12.483 3.734 3.664-.196 7.242-1.494 10.552-3.734"/><path fill="#237a99" d="M37.514 30.003a7.516 7.516 0 11-15.031 0 7.516 7.516 0 0115.03 0"/><path fill="#34abc6" d="M29.998 16.45c-7.482 0-13.549 6.067-13.549 13.553 0 7.484 6.067 13.55 13.55 13.55 7.484 0 13.552-6.066 13.552-13.55.001-7.486-6.067-13.553-13.553-13.553m0 21.089a7.391 7.391 0 010-14.782 7.391 7.391 0 110 14.782"/><path fill="#242f35" d="M34.928 30.145A4.926 4.926 0 0130 35.072a4.93 4.93 0 01-4.93-4.927 4.929 4.929 0 119.857 0"/><rect width="6.054" height="70.636" x="40.106" y="-35.318" fill="#405866" rx="2.232" ry="1.149" transform="rotate(45)"/></svg>
\ No newline at end of file
diff --git a/simplespoiler/styles/all/theme/js/details-element-polyfill.min.js b/simplespoiler/styles/all/theme/js/details-element-polyfill.min.js
new file mode 100644
index 0000000..fa13ff8
--- /dev/null
+++ b/simplespoiler/styles/all/theme/js/details-element-polyfill.min.js
@@ -0,0 +1,21 @@
+/*
+Details Element Polyfill 2.4.0
+Copyright © 2019 Javan Makhmali
+*/
+(function(){"use strict";var element=document.createElement("details");var elementIsNative=typeof HTMLDetailsElement!="undefined"&&element instanceof HTMLDetailsElement;var support={open:"open"in element||elementIsNative,toggle:"ontoggle"in element};var styles='\ndetails, summary {\n  display: block;\n}\ndetails:not([open]) > *:not(summary) {\n  display: none;\n}\nsummary::before {\n  content: "►";\n  padding-right: 0.3rem;\n  font-size: 0.6rem;\n  cursor: default;\n}\n[open] > summary::before {\n  content: "▼";\n}\n';var _ref=[],forEach=_ref.forEach,slice=_ref.slice;if(!support.open){polyfillStyles();polyfillProperties();polyfillToggle();polyfillAccessibility();}
+if(support.open&&!support.toggle){polyfillToggleEvent();}
+function polyfillStyles(){document.head.insertAdjacentHTML("afterbegin","<style>"+styles+"</style>");}
+function polyfillProperties(){var prototype=document.createElement("details").constructor.prototype;var setAttribute=prototype.setAttribute,removeAttribute=prototype.removeAttribute;var open=Object.getOwnPropertyDescriptor(prototype,"open");Object.defineProperties(prototype,{open:{get:function get(){if(this.tagName=="DETAILS"){return this.hasAttribute("open");}else{if(open&&open.get){return open.get.call(this);}}},set:function set(value){if(this.tagName=="DETAILS"){return value?this.setAttribute("open",""):this.removeAttribute("open");}else{if(open&&open.set){return open.set.call(this,value);}}}},setAttribute:{value:function value(name,_value){var _this=this;var call=function call(){return setAttribute.call(_this,name,_value);};if(name=="open"&&this.tagName=="DETAILS"){var wasOpen=this.hasAttribute("open");var result=call();if(!wasOpen){var summary=this.querySelector("summary");if(summary)summary.setAttribute("aria-expanded",true);triggerToggle(this);}
+return result;}
+return call();}},removeAttribute:{value:function value(name){var _this2=this;var call=function call(){return removeAttribute.call(_this2,name);};if(name=="open"&&this.tagName=="DETAILS"){var wasOpen=this.hasAttribute("open");var result=call();if(wasOpen){var summary=this.querySelector("summary");if(summary)summary.setAttribute("aria-expanded",false);triggerToggle(this);}
+return result;}
+return call();}}});}
+function polyfillToggle(){onTogglingTrigger(function(element){element.hasAttribute("open")?element.removeAttribute("open"):element.setAttribute("open","");});}
+function polyfillToggleEvent(){if(window.MutationObserver){new MutationObserver(function(mutations){forEach.call(mutations,function(mutation){var target=mutation.target,attributeName=mutation.attributeName;if(target.tagName=="DETAILS"&&attributeName=="open"){triggerToggle(target);}});}).observe(document.documentElement,{attributes:true,subtree:true});}else{onTogglingTrigger(function(element){var wasOpen=element.getAttribute("open");setTimeout(function(){var isOpen=element.getAttribute("open");if(wasOpen!=isOpen){triggerToggle(element);}},1);});}}
+function polyfillAccessibility(){setAccessibilityAttributes(document);if(window.MutationObserver){new MutationObserver(function(mutations){forEach.call(mutations,function(mutation){forEach.call(mutation.addedNodes,setAccessibilityAttributes);});}).observe(document.documentElement,{subtree:true,childList:true});}else{document.addEventListener("DOMNodeInserted",function(event){setAccessibilityAttributes(event.target);});}}
+function setAccessibilityAttributes(root){findElementsWithTagName(root,"SUMMARY").forEach(function(summary){var details=findClosestElementWithTagName(summary,"DETAILS");summary.setAttribute("aria-expanded",details.hasAttribute("open"));if(!summary.hasAttribute("tabindex"))summary.setAttribute("tabindex","0");if(!summary.hasAttribute("role"))summary.setAttribute("role","button");});}
+function eventIsSignificant(event){return!(event.defaultPrevented||event.ctrlKey||event.metaKey||event.shiftKey||event.target.isContentEditable);}
+function onTogglingTrigger(callback){addEventListener("click",function(event){if(eventIsSignificant(event)){if(event.which<=1){var element=findClosestElementWithTagName(event.target,"SUMMARY");if(element&&element.parentNode&&element.parentNode.tagName=="DETAILS"){callback(element.parentNode);}}}},false);addEventListener("keydown",function(event){if(eventIsSignificant(event)){if(event.keyCode==13||event.keyCode==32){var element=findClosestElementWithTagName(event.target,"SUMMARY");if(element&&element.parentNode&&element.parentNode.tagName=="DETAILS"){callback(element.parentNode);event.preventDefault();}}}},false);}
+function triggerToggle(element){var event=document.createEvent("Event");event.initEvent("toggle",false,false);element.dispatchEvent(event);}
+function findElementsWithTagName(root,tagName){return(root.tagName==tagName?[root]:[]).concat(typeof root.getElementsByTagName=="function"?slice.call(root.getElementsByTagName(tagName)):[]);}
+function findClosestElementWithTagName(element,tagName){if(typeof element.closest=="function"){return element.closest(tagName);}else{while(element){if(element.tagName==tagName){return element;}else{element=element.parentNode;}}}}})();
diff --git a/simplespoiler/styles/all/theme/js/spoiler.js b/simplespoiler/styles/all/theme/js/spoiler.js
new file mode 100644
index 0000000..3d32a28
--- /dev/null
+++ b/simplespoiler/styles/all/theme/js/spoiler.js
@@ -0,0 +1,65 @@
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+(function() {
+	'use strict';
+
+	// Polyfill for Element.matches()
+	// https://developer.mozilla.org/en-US/docs/Web/API/Element/matches#Polyfill
+	if (!Element.prototype.matches) {
+		Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
+	}
+
+	// Polyfill for Element.closest()
+	// https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill
+	if (!Element.prototype.closest) {
+		Element.prototype.closest = function(s) {
+			let el = this;
+
+			do {
+				if (el.matches(s)) {
+					return el;
+				}
+
+				el = el.parentElement || el.parentNode;
+			} while (el !== null && el.nodeType === 1);
+
+			return null;
+		};
+	}
+
+	// Toggle status icon
+	document.body.addEventListener('click', function(e) {
+		// Trigger event on the spoiler header
+		if (!e.target.closest('.spoiler-header')) {
+			return;
+		}
+
+		// Generate elements
+		let elements = {
+			container: e.target.closest('.spoiler')
+		};
+
+		if (!elements.container) {
+			return;
+		}
+
+		// Status icon
+		elements.icon = elements.container.querySelector('.spoiler-status > .icon');
+
+		if (!elements.icon) {
+			return;
+		}
+
+		// Check if spoiler is opened
+		let isOpen = elements.container.hasAttribute('open');
+
+		// Toggle FontAwesome icon
+		elements.icon.classList.toggle('fa-eye', isOpen);
+		elements.icon.classList.toggle('fa-eye-slash', !isOpen);
+	});
+})();
diff --git a/simplespoiler/styles/all/theme/js/spoiler.min.js b/simplespoiler/styles/all/theme/js/spoiler.min.js
new file mode 100644
index 0000000..7dd0c72
--- /dev/null
+++ b/simplespoiler/styles/all/theme/js/spoiler.min.js
@@ -0,0 +1 @@
+!function(){'use strict';Element.prototype.matches||(Element.prototype.matches=Element.prototype.msMatchesSelector||Element.prototype.webkitMatchesSelector),Element.prototype.closest||(Element.prototype.closest=function(e){let t=this;do{if(t.matches(e))return t;t=t.parentElement||t.parentNode}while(null!==t&&1===t.nodeType);return null}),document.body.addEventListener('click',function(e){if(!e.target.closest('.spoiler-header'))return;let t={container:e.target.closest('.spoiler')};if(!t.container)return;if(t.icon=t.container.querySelector('.spoiler-status > .icon'),!t.icon)return;let o=t.container.hasAttribute('open');t.icon.classList.toggle('fa-eye',o),t.icon.classList.toggle('fa-eye-slash',!o)})}();
diff --git a/simplespoiler/styles/prosilver/template/abbc3_spoiler_button.html b/simplespoiler/styles/prosilver/template/abbc3_spoiler_button.html
new file mode 100644
index 0000000..1be2fa3
--- /dev/null
+++ b/simplespoiler/styles/prosilver/template/abbc3_spoiler_button.html
@@ -0,0 +1 @@
+<button type="button" class="bbcode-spoiler abbc3_button{% if SIMPLE_SPOILER_ABBC3_ICON_TYPE %} icon-type-{{ SIMPLE_SPOILER_ABBC3_ICON_TYPE|lower|striptags|escape }}{% endif %}" name="addspoiler" onclick="bbfontstyle('[spoiler]', '[/spoiler]');" title="{{ lang('SPOILER_HELPLINE')|striptags|escape }}" accesskey="e"></button>
diff --git a/simplespoiler/styles/prosilver/template/spoiler_button.html b/simplespoiler/styles/prosilver/template/spoiler_button.html
new file mode 100644
index 0000000..eb2ea14
--- /dev/null
+++ b/simplespoiler/styles/prosilver/template/spoiler_button.html
@@ -0,0 +1,3 @@
+<button type="button" class="button button-icon-only bbcode-spoiler" name="addspoiler" value="{{ lang('SPOILER')|striptags|escape }}" onclick="bbfontstyle('[spoiler]', '[/spoiler]');" title="{{ lang('SPOILER_HELPLINE')|striptags|escape }}" accesskey="e">
+	<i class="icon fa-fw fa-eye-slash" aria-hidden="true"></i>
+</button>
diff --git a/simplespoiler/styles/prosilver/theme/css/colors.css b/simplespoiler/styles/prosilver/theme/css/colors.css
new file mode 100644
index 0000000..c8461be
--- /dev/null
+++ b/simplespoiler/styles/prosilver/theme/css/colors.css
@@ -0,0 +1,33 @@
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+details.spoiler {
+	background-color: #fff;
+}
+
+details.spoiler,
+.spoiler-header {
+	border-color: #ddd;
+}
+
+.spoiler-header {
+	background-color: #f3f3f3;
+	color: #333;
+}
+
+.spoiler-status {
+	background-color: #d9534f;
+}
+
+.spoiler-status,
+.spoiler-status > .icon {
+	color: #fff;
+}
+
+details.spoiler[open] > .spoiler-header > .spoiler-status {
+	background-color: #5cb85c;
+}
diff --git a/simplespoiler/styles/prosilver/theme/css/colors.min.css b/simplespoiler/styles/prosilver/theme/css/colors.min.css
new file mode 100644
index 0000000..05c560e
--- /dev/null
+++ b/simplespoiler/styles/prosilver/theme/css/colors.min.css
@@ -0,0 +1 @@
+details.spoiler{background-color:#fff}details.spoiler,.spoiler-header{border-color:#ddd}.spoiler-header{background-color:#f3f3f3;color:#333}.spoiler-status{background-color:#d9534f}.spoiler-status,.spoiler-status>.icon{color:#fff}details.spoiler[open]>.spoiler-header>.spoiler-status{background-color:#5cb85c}
diff --git a/simplespoiler/styles/prosilver/theme/css/style.css b/simplespoiler/styles/prosilver/theme/css/style.css
new file mode 100644
index 0000000..4977cd1
--- /dev/null
+++ b/simplespoiler/styles/prosilver/theme/css/style.css
@@ -0,0 +1,52 @@
+/**
+ * Simple Spoiler extension for phpBB.
+ * @author Alfredo Ramos <alfredo.ramos@yandex.com>
+ * @copyright 2017 Alfredo Ramos
+ * @license GPL-2.0-only
+ */
+
+details.spoiler {
+	border-width: 1px;
+	border-style: solid;
+	margin: 1em 0;
+}
+
+details.spoiler .spoiler:last-child {
+	margin-bottom: 5px;
+}
+
+details.spoiler,
+.spoiler-header {
+	padding: 3px 5px;
+}
+
+.spoiler,
+.spoiler-status {
+	border-radius: 4px;
+}
+
+.spoiler-header {
+	margin: -3px -5px;
+}
+
+.spoiler[open] > .spoiler-header {
+	margin-bottom: 5px;
+	border-width: 0 0 1px;
+	border-style: solid;
+}
+
+.spoiler-status {
+	padding: 1px 4px;
+}
+
+.bbcode-spoiler.abbc3_button {
+	background-image: url('../../../all/theme/images/eye-invisible.svg');
+	background-size: contain;
+	background-position: center;
+	background-repeat: no-repeat;
+}
+
+.bbcode-spoiler.abbc3_button.icon-type-svg {
+	-webkit-filter: grayscale(1);
+	filter: grayscale(1);
+}
diff --git a/simplespoiler/styles/prosilver/theme/css/style.min.css b/simplespoiler/styles/prosilver/theme/css/style.min.css
new file mode 100644
index 0000000..045e16b
--- /dev/null
+++ b/simplespoiler/styles/prosilver/theme/css/style.min.css
@@ -0,0 +1 @@
+details.spoiler{border-width:1px;border-style:solid;margin:1em 0}details.spoiler .spoiler:last-child{margin-bottom:5px}details.spoiler,.spoiler-header{padding:3px 5px}.spoiler,.spoiler-status{border-radius:4px}.spoiler-header{margin:-3px -5px}.spoiler[open]>.spoiler-header{margin-bottom:5px;border-width:0 0 1px;border-style:solid}.spoiler-status{padding:1px 4px}.bbcode-spoiler.abbc3_button{background-image:url("../../../all/theme/images/eye-invisible.svg");background-size:contain;background-position:center;background-repeat:no-repeat}.bbcode-spoiler.abbc3_button.icon-type-svg{-webkit-filter:grayscale(1);filter:grayscale(1)}