diff --git a/src/admin/class-footnotes-admin.php b/src/admin/class-footnotes-admin.php
index 2809853..bfd1051 100644
--- a/src/admin/class-footnotes-admin.php
+++ b/src/admin/class-footnotes-admin.php
@@ -52,9 +52,9 @@ class Footnotes_Admin {
 
 	/**
 	 * Initialize the class and set its properties.
-	 
-	 * @param  string  $plugin_name  The name of this plugin.
-	 * @param  string  $version  The version of this plugin.
+
+	 * @param  string $plugin_name  The name of this plugin.
+	 * @param  string $version  The version of this plugin.
 	 *
 	 * @since  2.8.0
 	 */
@@ -140,7 +140,7 @@ class Footnotes_Admin {
 	/**
 	 * Appends the Plugin links for display in the dashboard Plugins page.
 	 *
-	 * @param  string[]  $links  The default set of links to display.
+	 * @param  string[] $links  The default set of links to display.
 	 * @return  string[]  The full set of links to display.
 	 *
 	 * @since  1.5.0
diff --git a/src/admin/class-footnotes-wysiwyg.php b/src/admin/class-footnotes-wysiwyg.php
index 037ec59..90e8152 100644
--- a/src/admin/class-footnotes-wysiwyg.php
+++ b/src/admin/class-footnotes-wysiwyg.php
@@ -10,7 +10,7 @@
  * @package  footnotes\admin
  * @since  1.5.0
  * @since  2.8.0  Rename file from `wysiwyg.php` to `class-footnotes-wysiwyg.php`,
- *								move from `class/` sub-directory to `admin/`.
+ *                              move from `class/` sub-directory to `admin/`.
  */
 
 /**
@@ -47,7 +47,7 @@ class Footnotes_WYSIWYG {
 	/**
 	 * Append a new Button to the WYSIWYG editor of Posts and Pages.
 	 *
-	 * @param  string[]  $p_arr_buttons  Already-defined editor buttons.
+	 * @param  string[] $p_arr_buttons  Already-defined editor buttons.
 	 * @return  string[]
 	 *
 	 * @since  1.5.0
@@ -73,7 +73,7 @@ class Footnotes_WYSIWYG {
 	/**
 	 * Includes the Plugins WYSIWYG editor script.
 	 *
-	 * @param  string[]  $p_arr_plugins  Scripts to be included by the editor.
+	 * @param  string[] $p_arr_plugins  Scripts to be included by the editor.
 	 * @return  string[]
 	 *
 	 * @since  1.5.0
diff --git a/src/admin/layout/class-footnotes-layout-engine.php b/src/admin/layout/class-footnotes-layout-engine.php
index 7de4d72..a9610c2 100644
--- a/src/admin/layout/class-footnotes-layout-engine.php
+++ b/src/admin/layout/class-footnotes-layout-engine.php
@@ -4,13 +4,13 @@
  *
  * The Admin. Layouts subpackage is composed of the {@see Footnotes_Layout_Engine}
  * abstract class, which is extended by the {@see Footnotes_Layout_Settings}
- * sub-class. The subpackage is initialised at runtime by the {@see 
+ * sub-class. The subpackage is initialised at runtime by the {@see
  * Footnotes_Layout_Init} class.
  *
  * @package  footnotes\admin_layout
  * @since  1.5.0
  * @since  2.8.0  Rename file from `layout.php` to `class-footnotes-layout-engine.php`,
- *								rename `dashboard/` sub-directory to `layout/`.
+ *                              rename `dashboard/` sub-directory to `layout/`.
  */
 
 require_once plugin_dir_path( dirname( __FILE__ ) ) . 'layout/class-footnotes-layout-init.php';
@@ -19,7 +19,7 @@ require_once plugin_dir_path( dirname( __FILE__ ) ) . 'layout/class-footnotes-la
  * Class to be extended by page layout sub-classes.
  *
  * @abstract
- 
+
  * @package  footnotes\admin_layout
  * @since  1.5.0
  */
@@ -113,11 +113,11 @@ abstract class Footnotes_Layout_Engine {
 	 * Returns an array describing a sub-page section.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_id  Unique ID suffix.
-	 * @param  string  $p_str_title  Title of the section.
-	 * @param  int  $p_int_settings_container_index  Settings Container index.
-	 * @param  bool  $p_bool_has_submit_button  Whether a ‘Submit’ button should 
-	 *																					be displayed for this section. Default `true`.
+	 * @param  string $p_str_id  Unique ID suffix.
+	 * @param  string $p_str_title  Title of the section.
+	 * @param  int    $p_int_settings_container_index  Settings Container index.
+	 * @param  bool   $p_bool_has_submit_button  Whether a ‘Submit’ button should
+	 *                                                                                   be displayed for this section. Default `true`.
 	 * @return  array  {
 	 *     A dashboard section.
 	 *
@@ -143,10 +143,10 @@ abstract class Footnotes_Layout_Engine {
 	 * Returns an array describing a meta box.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_section_id  Parent section ID.
-	 * @param  string  $p_str_id  Unique ID suffix.
-	 * @param  string  $p_str_title  Title for the meta box.
-	 * @param  string  $p_str_callback_function_name  Class method name for callback.
+	 * @param  string $p_str_section_id  Parent section ID.
+	 * @param  string $p_str_id  Unique ID suffix.
+	 * @param  string $p_str_title  Title for the meta box.
+	 * @param  string $p_str_callback_function_name  Class method name for callback.
 	 * @return  array  {
 	 *     A dashboard meta box.
 	 *
@@ -218,7 +218,7 @@ abstract class Footnotes_Layout_Engine {
 	 * Registers all Meta boxes for a sub-page.
 	 *
 	 * @access  private
-	 * @param  string  $p_str_parent_id  Parent section unique ID.
+	 * @param  string $p_str_parent_id  Parent section unique ID.
 	 *
 	 * @since  1.5.0
 	 */
@@ -369,7 +369,7 @@ abstract class Footnotes_Layout_Engine {
 	 * Loads a specified setting.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_key_name  Setting key.	
+	 * @param  string $p_str_setting_key_name  Setting key.
 	 * @return  array  {
 	 *     A configurable setting.
 	 *
@@ -391,12 +391,12 @@ abstract class Footnotes_Layout_Engine {
 		$p_arr_return['value'] = esc_attr( Footnotes_Settings::instance()->get( $p_str_setting_key_name ) );
 		return $p_arr_return;
 	}
-	
+
 	/**
 	 * Returns a simple text inside HTML `<span>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_text  Message to be surrounded with `<span>` tags.
+	 * @param  string $p_str_text  Message to be surrounded with `<span>` tags.
 	 * @return  string
 	 *
 	 * @since  1.5.0
@@ -410,8 +410,8 @@ abstract class Footnotes_Layout_Engine {
 	 * Returns the HTML tag for an `<input>`/`<select>` label.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name  Settings key.
-	 * @param  string  $p_str_caption  Label caption.
+	 * @param  string $p_str_setting_name  Settings key.
+	 * @param  string $p_str_caption  Label caption.
 	 * @return  string
 	 *
 	 * @since  1.5.0
@@ -440,10 +440,10 @@ abstract class Footnotes_Layout_Engine {
 	 * Constructs the HTML for a text `<input>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name  Setting key.
-	 * @param  int  $p_str_max_length  Maximum length of the input. Default length 999 chars.
-	 * @param  bool  $p_bool_readonly  Set the input to be read only. Default `false`.
-	 * @param  bool  $p_bool_hidden  Set the input to be hidden. Default `false`.
+	 * @param  string $p_str_setting_name  Setting key.
+	 * @param  int    $p_str_max_length  Maximum length of the input. Default length 999 chars.
+	 * @param  bool   $p_bool_readonly  Set the input to be read only. Default `false`.
+	 * @param  bool   $p_bool_hidden  Set the input to be hidden. Default `false`.
 	 * @return  string
 	 *
 	 * @since  1.5.0
@@ -471,7 +471,7 @@ abstract class Footnotes_Layout_Engine {
 	 * Constructs the HTML for a checkbox `<input>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name  Setting key.
+	 * @param  string $p_str_setting_name  Setting key.
 	 * @return  string
 	 *
 	 * @since  1.5.0
@@ -492,7 +492,7 @@ abstract class Footnotes_Layout_Engine {
 	 * Constructs the HTML for a `<select>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name  Setting key.
+	 * @param  string $p_str_setting_name  Setting key.
 	 * @param  array  $p_arr_options  Possible options.
 	 * @return  string
 	 *
@@ -528,7 +528,7 @@ abstract class Footnotes_Layout_Engine {
 	 * Constructs the HTML for a `<textarea>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name  Setting key.
+	 * @param  string $p_str_setting_name  Setting key.
 	 * @return  string
 	 *
 	 * @since  1.5.0
@@ -550,7 +550,7 @@ abstract class Footnotes_Layout_Engine {
 	 * class.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name Setting key.
+	 * @param  string $p_str_setting_name Setting key.
 	 * @return  string
 	 *
 	 * @since  1.5.6
@@ -572,10 +572,10 @@ abstract class Footnotes_Layout_Engine {
 	 * Constructs the HTML for numeric `<input>` element.
 	 *
 	 * @access  protected
-	 * @param  string  $p_str_setting_name Setting key.
-	 * @param  int  $p_in_min  Minimum value.
-	 * @param  int  $p_int_max  Maximum value.
-	 * @param  bool  $p_bool_deci  `true` if float, `false` if integer. Default `false`.
+	 * @param  string $p_str_setting_name Setting key.
+	 * @param  int    $p_in_min  Minimum value.
+	 * @param  int    $p_int_max  Maximum value.
+	 * @param  bool   $p_bool_deci  `true` if float, `false` if integer. Default `false`.
 	 * @return  string
 	 *
 	 * @since  1.5.0
diff --git a/src/admin/layout/class-footnotes-layout-init.php b/src/admin/layout/class-footnotes-layout-init.php
index fc9cb35..22a6abd 100644
--- a/src/admin/layout/class-footnotes-layout-init.php
+++ b/src/admin/layout/class-footnotes-layout-init.php
@@ -4,13 +4,13 @@
  *
  * The Admin. Layouts subpackage is composed of the {@see Footnotes_Layout_Engine}
  * abstract class, which is extended by the {@see Footnotes_Layout_Settings}
- * sub-class. The subpackage is initialised at runtime by the {@see 
+ * sub-class. The subpackage is initialised at runtime by the {@see
  * Footnotes_Layout_Init} class.
  *
  * @package  footnotes\admin_layout
  * @since  1.5.0
  * @since  2.8.0  Rename file from `init.php` to `class-footnotes-layout-init.php`,
- *								rename `dashboard/` sub-directory to `layout/`.
+ *                              rename `dashboard/` sub-directory to `layout/`.
  */
 
 /**
@@ -52,7 +52,7 @@ class Footnotes_Layout_Init {
 	/**
 	 * Initializes all WordPress hooks for the Plugin Settings.
 	 *
-	 * @param  string  $plugin_name  The name of the plugin.
+	 * @param  string $plugin_name  The name of the plugin.
 	 *
 	 * @since  1.5.0
 	 * @since  2.8.0  Added `$plugin_name` parameter.
@@ -71,7 +71,7 @@ class Footnotes_Layout_Init {
 		add_action( 'wp_ajax_nopriv_footnotes_get_plugin_info', array( $this, 'get_plugin_meta_information' ) );
 		add_action( 'wp_ajax_footnotes_get_plugin_info', array( $this, 'get_plugin_meta_information' ) );
 	}
-	
+
 	/**
 	 * Load the required dependencies for the layouts pages.
 	 *
diff --git a/src/admin/layout/class-footnotes-layout-settings.php b/src/admin/layout/class-footnotes-layout-settings.php
index 7e0ee9b..475e946 100644
--- a/src/admin/layout/class-footnotes-layout-settings.php
+++ b/src/admin/layout/class-footnotes-layout-settings.php
@@ -4,13 +4,13 @@
  *
  * The Admin. Layouts subpackage is composed of the {@see Footnotes_Layout_Engine}
  * abstract class, which is extended by the {@see Footnotes_Layout_Settings}
- * sub-class. The subpackage is initialised at runtime by the {@see 
+ * sub-class. The subpackage is initialised at runtime by the {@see
  * Footnotes_Layout_Init} class.
  *
  * @package  footnotes\admin_layout
  * @since  1.5.0
  * @since  2.8.0  Rename file from `subpage-main.php` to `class-footnotes-layout-settings.php`,
- *								rename `dashboard/` sub-directory to `layout/`.
+ *                              rename `dashboard/` sub-directory to `layout/`.
  */
 
 /**
@@ -32,7 +32,7 @@ class Footnotes_Layout_Settings extends Footnotes_Layout_Engine {
 	 * Initialize the class and set its properties.
 	 *
 	 * @since  2.8.0
-	 * @param  string  $plugin_name  The name of this plugin.
+	 * @param  string $plugin_name  The name of this plugin.
 	 */
 	public function __construct( $plugin_name ) {
 		$this->plugin_name = $plugin_name;
@@ -74,7 +74,7 @@ class Footnotes_Layout_Settings extends Footnotes_Layout_Engine {
 	 * Returns an array of all registered sections for the sub-page.
 	 *
 	 * @see  Footnotes_Layout_Engine::add_section()  For more information on the
-	 *       																			   section array format.
+	 *                                                                                     section array format.
 	 * @return  array[]  All of the registered sections.
 	 *
 	 * @since  1.5.0
@@ -100,7 +100,7 @@ class Footnotes_Layout_Settings extends Footnotes_Layout_Engine {
 	 * Returns an array of all registered meta boxes for each section of the sub-page.
 	 *
 	 * @see  Footnotes_Layout_Engine::add_meta_box()  For more information on the
-	 *       																			    meta box array format.
+	 *                                                                                      meta box array format.
 	 * @return  array[]  All of the registered meta boxes.
 	 *
 	 * @since  1.5.0
@@ -208,6 +208,7 @@ class Footnotes_Layout_Settings extends Footnotes_Layout_Engine {
 				'semicolon' => __( 'SEMICOLON', 'footnotes' ),
 				'en_dash'   => __( 'EN DASH', 'footnotes' ),
 			);
+
 			/*
 			 * Options for the terminating punctuation after backlinks.
 			 * The Unicode name of RIGHT PARENTHESIS was originally more accurate because.
@@ -1266,7 +1267,7 @@ class Footnotes_Layout_Settings extends Footnotes_Layout_Engine {
 		);
 
 		/*
-		 * Call {@see Footnotes_Parser::footnotes_output_head()} function to get 
+		 * Call {@see Footnotes_Parser::footnotes_output_head()} function to get
 		 * the styling of the mouse-over box.
 		 *
 		 * The name of the callback function ought to be distinct from
diff --git a/src/footnotes.php b/src/footnotes.php
index 8413518..3d93e39 100755
--- a/src/footnotes.php
+++ b/src/footnotes.php
@@ -10,7 +10,6 @@
  * @package  footnotes
  * @license  GPL-3.0-only
  * @copyright  2021 Mark Cheret (email: mark@cheret.de)
- *
  * @since  1.0.0
  *
  * @wordpress-plugin
@@ -34,48 +33,56 @@ if ( ! defined( 'WPINC' ) ) {
 }
 
 /**
- * The current plugin version.
+ * The plugin version.
  *
  * @link https://github.com/markcheret/footnotes/wiki/Versioning Versioning Guide
  *
- * @global string PLUGIN_VERSION
- *
- * @since 2.1.4
+ * @since  2.1.4
+ * @todo  Draw from envfile rather than hard-coding.
+ * @var  string  PLUGIN_VERSION  The version of this instance of the plugin.
  */
 define( 'PLUGIN_VERSION', '2.8.0d' );
 
 /**
- * The current environment ('development' or 'production').
+ * The environment that the plugin is configured for.
  *
- * This primarily affects whether minified or unminified files are requested.
+ * This primarily affects whether minified or unminified CSS/JS files are
+ * requested.
  *
- * @global bool PRODUCTION_ENV
- *
- * @since 2.5.5
+ * @since  2.5.5
+ * @todo  Draw from envfile rather than hard-coding.
+ * @todo  Replace with string for >2 environment options.
+ * @var  bool  PRODUCTION_ENV  Whether the plugin is running in production mode or not. Default `false`.
  */
 define( 'PRODUCTION_ENV', false );
 
 /**
- * Triggers during plugin activation.
+ * Handles the activation of the plugin.
  *
- * @uses Footnotes_Activator::activate() Method called on plugin activation.
- *
- * @since 2.8.0
+ * @since  2.8.0
+ * @see  Footnotes_Activator::activate()
  */
 function activate_footnotes() {
+	/**
+	 * Provides plugin activation functionality.
+	 */
 	require_once plugin_dir_path( __FILE__ ) . 'includes/class-footnotes-activator.php';
+
 	Footnotes_Activator::activate();
 }
 
 /**
- * Triggers during plugin deactivation.
+ * Handles the deactivation of the plugin.
  *
- * @uses Footnotes_Deactivator::deactivate() Method called on plugin deactivation.
- *
- * @since 2.8.0
+ * @since  2.8.0
+ * @see  Footnotes_Deactivator::deactivate()
  */
-function deactivate_plugin_name() {
+function deactivate_footnotes() {
+	/**
+	 * Provides plugin deactivation functionality.
+	 */
 	require_once plugin_dir_path( __FILE__ ) . 'includes/class-footnotes-deactivator.php';
+
 	Footnotes_Deactivator::deactivate();
 }
 
@@ -83,18 +90,18 @@ register_activation_hook( __FILE__, 'activate_footnotes' );
 register_deactivation_hook( __FILE__, 'deactivate_footnotes' );
 
 /**
- * The core plugin class that is used to define internationalization,
- * admin-specific hooks, and public-facing site hooks.
+ * The core plugin class that defines internationalization, admin-specific and
+ * public-facing site hooks and functionality.
  */
 require plugin_dir_path( __FILE__ ) . 'includes/class-footnotes.php';
 
 /**
  * Begins execution of the plugin.
  *
- * Since everything within the plugin is registered via hooks, then kicking off 
+ * Since everything within the plugin is registered via hooks, then kicking off
  * the plugin from this point in the file does not affect the page life cycle.
  *
- * @since 2.8.0
+ * @since  2.8.0
  */
 function run_footnotes() {
 	global $footnotes;
diff --git a/src/includes/class-footnotes-config.php b/src/includes/class-footnotes-config.php
index c128137..db0e2eb 100644
--- a/src/includes/class-footnotes-config.php
+++ b/src/includes/class-footnotes-config.php
@@ -7,7 +7,7 @@
  *
  * @since  1.5.0
  * @since  2.8.0  Rename file from `config.php` to `class-footnotes-config.php`,
- *								rename `class/` sub-directory to `includes/`.
+ *                              rename `class/` sub-directory to `includes/`.
  * @todo  Remove.
  * @deprecated
  */
@@ -32,7 +32,7 @@ class Footnotes_Config {
 	 *
 	 * @since  1.5.0
 	 * @todo  Remove.
- 	 * @deprecated
+	 * @deprecated
 	 */
 	const C_STR_PLUGIN_PUBLIC_NAME = '<span class="footnotes_logo footnotes_logo_part1">foot</span><span class="footnotes_logo footnotes_logo_part2">notes</span>';
 
@@ -49,7 +49,7 @@ class Footnotes_Config {
 	 *
 	 * @since  2.0.4
 	 * @todo  Remove.
- 	 * @deprecated
+	 * @deprecated
 	 */
 	const C_STR_PLUGIN_HEADING_NAME = '<span class="footnotes_logo_heading footnotes_logo_part1_heading">foot</span><span class="footnotes_logo_heading footnotes_logo_part2_heading">notes</span>';
 
@@ -60,7 +60,7 @@ class Footnotes_Config {
 	 *
 	 * @since  1.5.0
 	 * @todo  Remove.
- 	 * @deprecated
+	 * @deprecated
 	 */
 	const C_STR_LOVE_SYMBOL = '<span style="color:#ff6d3b; font-weight:bold;">&hearts;</span>';
 
@@ -71,7 +71,7 @@ class Footnotes_Config {
 	 *
 	 * @since  2.0.4
 	 * @todo  Remove.
- 	 * @deprecated
+	 * @deprecated
 	 */
 	const C_STR_LOVE_SYMBOL_HEADING = '<span class="footnotes_heart_heading">&hearts;</span>';
 
@@ -82,7 +82,7 @@ class Footnotes_Config {
 	 *
 	 * @since  1.5.0
 	 * @todo  Remove.
- 	 * @deprecated
+	 * @deprecated
 	 */
 	const C_STR_NO_LOVE_SLUG = '[[no footnotes: love]]';
 }
diff --git a/src/includes/class-footnotes-convert.php b/src/includes/class-footnotes-convert.php
index 37772de..2752df9 100644
--- a/src/includes/class-footnotes-convert.php
+++ b/src/includes/class-footnotes-convert.php
@@ -7,7 +7,7 @@
  *
  * @since  1.5.0
  * @since  2.8.0  Rename file from `convert.php` to `class-footnotes-convert.php`,
- *								rename `class/` sub-directory to `includes/`.
+ *                              rename `class/` sub-directory to `includes/`.
  */
 
 /**
@@ -23,8 +23,8 @@ class Footnotes_Convert {
 	/**
 	 * Converts an integer into the user-defined counter style for the footnotes.
 	 *
-	 * @param  int  $p_int_index  Index to be converted.
-	 * @param  string  $p_str_convert_style  Counter style to use.
+	 * @param  int    $p_int_index  Index to be converted.
+	 * @param  string $p_str_convert_style  Counter style to use.
 	 * @return  string  Converted  Index converted to the defined counter style.
 	 *
 	 * @since  1.5.0
@@ -54,7 +54,7 @@ class Footnotes_Convert {
 	 * gootnotes per Page).
 	 *
 	 * @param  int  $p_int_value  Value to be converted.
-	 * @param  bool  $p_bool_upper_case  Whether to convert the value to upper-case.
+	 * @param  bool $p_bool_upper_case  Whether to convert the value to upper-case.
 	 * @return  string
 	 *
 	 * @since  1.0-gamma
@@ -86,7 +86,7 @@ class Footnotes_Convert {
 	/**
 	 * Converts an integer to a leading-0 integer.
 	 *
-	 * @param  int  $p_int_value  Value to be converted.
+	 * @param  int $p_int_value  Value to be converted.
 	 * @return  string  Value with a leading zero.
 	 *
 	 * @since  1.0-gamma
@@ -104,7 +104,7 @@ class Footnotes_Convert {
 	 * Converts an integer to a Roman numeral.
 	 *
 	 * @param  int  $p_int_value  Value to be converted.
-	 * @param  bool  $p_bool_upper_case  Whether to convert the value to upper-case.
+	 * @param  bool $p_bool_upper_case  Whether to convert the value to upper-case.
 	 * @return  string
 	 *
 	 * @since  1.0-gamma
@@ -148,7 +148,7 @@ class Footnotes_Convert {
 	/**
 	 * Converts a string depending on its value to a boolean.
 	 *
-	 * @param  string  $p_str_value  String to be converted to boolean.
+	 * @param  string $p_str_value  String to be converted to boolean.
 	 * @return  bool  Boolean value represented by the string.
 	 *
 	 * @since  1.0-beta
@@ -173,7 +173,7 @@ class Footnotes_Convert {
 	/**
 	 * Get an HTML array short code depending on Arrow-Array key index.
 	 *
-	 * @param  int  $p_int_index Index representing the arrow. If empty, all arrows are specified.
+	 * @param  int $p_int_index Index representing the arrow. If empty, all arrows are specified.
 	 * @return  array|string  Array of all arrows if index is empty, otherwise HTML tag of a specific arrow.
 	 *
 	 * @since  1.3.2
@@ -198,7 +198,7 @@ class Footnotes_Convert {
 	/**
 	 * Displays a variable.
 	 *
-	 * @param  mixed  $p_mixed_value  The variable to display.
+	 * @param  mixed $p_mixed_value  The variable to display.
 	 *
 	 * @since  1.5.0
 	 * @todo  Replace with proper logging/debug functions.
diff --git a/src/includes/class-footnotes-i18n.php b/src/includes/class-footnotes-i18n.php
index f93a72c..65ff1b1 100644
--- a/src/includes/class-footnotes-i18n.php
+++ b/src/includes/class-footnotes-i18n.php
@@ -7,7 +7,7 @@
  *
  * @since  1.5.0
  * @since  2.8.0  Rename file from `language.php` to `class-footnotes-i18n.php`,
- *								rename `class/` sub-directory to `includes/`.
+ *                              rename `class/` sub-directory to `includes/`.
  */
 
 require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-footnotes-config.php';
@@ -15,7 +15,7 @@ require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-footnotes-
 /**
  * Class providing internationalization functionality.
  *
- * Loads and defines the internationalization files for this plugin so that it 
+ * Loads and defines the internationalization files for this plugin so that it
  * is ready for translation.
  *
  * @link  https://translate.wordpress.org/projects/wp-plugins/footnotes/  GlotPress listing
diff --git a/src/includes/class-footnotes-loader.php b/src/includes/class-footnotes-loader.php
index 64078a8..91400b7 100644
--- a/src/includes/class-footnotes-loader.php
+++ b/src/includes/class-footnotes-loader.php
@@ -11,8 +11,8 @@
 /**
  * Class defining action/filter registration for the plugin.
  *
- * Maintain a list of all hooks that are registered throughout the plugin, and 
- * register them with the WordPress API. Call the run function to execute the 
+ * Maintain a list of all hooks that are registered throughout the plugin, and
+ * register them with the WordPress API. Call the run function to execute the
  * list of actions and filters.
  *
  * @package  footnotes
@@ -56,11 +56,11 @@ class Footnotes_Loader {
 	/**
 	 * Add a new action to the collection to be registered with WordPress.
 	 *
-	 * @param  string  $hook  The name of the WordPress action that is being registered.
-	 * @param  object  $component  A reference to the instance of the object on which the action is defined.
-	 * @param  string  $callback  The name of the function definition on the `$component`.
-	 * @param  int  $priority  (optional) The priority at which the function should be fired. Default is 10.
-	 * @param  int  $accepted_args  (optional) The number of arguments that should be passed to the $callback. Default is 1.
+	 * @param  string $hook  The name of the WordPress action that is being registered.
+	 * @param  object $component  A reference to the instance of the object on which the action is defined.
+	 * @param  string $callback  The name of the function definition on the `$component`.
+	 * @param  int    $priority  (optional) The priority at which the function should be fired. Default is 10.
+	 * @param  int    $accepted_args  (optional) The number of arguments that should be passed to the $callback. Default is 1.
 	 *
 	 * @since  2.8.0
 	 */
@@ -71,11 +71,11 @@ class Footnotes_Loader {
 	/**
 	 * Add a new filter to the collection to be registered with WordPress.
 	 *
-	 * @param  string  $hook  The name of the WordPress filter that is being registered.
-	 * @param  object  $component  A reference to the instance of the object on which the filter is defined.
-	 * @param  string  $callback  The name of the function definition on the `$component`.
-	 * @param  int  $priority  (optional) The priority at which the function should be fired. Default is 10.
-	 * @param  int  $accepted_args  (optional) The number of arguments that should be passed to the $callback. Default is 1.
+	 * @param  string $hook  The name of the WordPress filter that is being registered.
+	 * @param  object $component  A reference to the instance of the object on which the filter is defined.
+	 * @param  string $callback  The name of the function definition on the `$component`.
+	 * @param  int    $priority  (optional) The priority at which the function should be fired. Default is 10.
+	 * @param  int    $accepted_args  (optional) The number of arguments that should be passed to the $callback. Default is 1.
 	 *
 	 * @since  2.8.0
 	 */
@@ -89,11 +89,11 @@ class Footnotes_Loader {
 	 *
 	 * @access  private
 	 * @param  array  $hooks  The collection of hooks that is being registered (that is, actions or filters).
-	 * @param  string  $hook  The name of the WordPress filter that is being registered.
-	 * @param  object  $component  A reference to the instance of the object on which the filter is defined.
-	 * @param  string  $callback  The name of the function definition on the `$component`.
-	 * @param  int  $priority  The priority at which the function should be fired.
-	 * @param  int  $accepted_args The number of arguments that should be passed to the `$callback`.
+	 * @param  string $hook  The name of the WordPress filter that is being registered.
+	 * @param  object $component  A reference to the instance of the object on which the filter is defined.
+	 * @param  string $callback  The name of the function definition on the `$component`.
+	 * @param  int    $priority  The priority at which the function should be fired.
+	 * @param  int    $accepted_args The number of arguments that should be passed to the `$callback`.
 	 * @return  array  The collection of actions and filters registered with WordPress.
 	 *
 	 * @since  2.8.0
diff --git a/src/includes/class-footnotes-settings.php b/src/includes/class-footnotes-settings.php
index 2b01aa0..81ba1b4 100644
--- a/src/includes/class-footnotes-settings.php
+++ b/src/includes/class-footnotes-settings.php
@@ -7,7 +7,7 @@
  *
  * @since  1.5.0
  * @since  2.8.0  Rename file from `settings.php` to `class-footnotes-settings.php`,
- *								rename `class/` sub-directory to `includes/`.
+ *                              rename `class/` sub-directory to `includes/`.
  */
 
 require_once plugin_dir_path( dirname( __FILE__ ) ) . 'includes/class-footnotes-convert.php';
@@ -138,8 +138,8 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key for the string before the footnote referrer.
 	 *
-	 * The default footnote referrer surroundings should be square brackets, as 
-	 * in English or US American typesetting, for better UX thanks to a more 
+	 * The default footnote referrer surroundings should be square brackets, as
+	 * in English or US American typesetting, for better UX thanks to a more
 	 * button-like appearance, as well as for stylistic consistency with the
 	 * expand-collapse button.
 	 *
@@ -191,14 +191,14 @@ class Footnotes_Settings {
 	 * @var  string
 	 *
 	 * @since  1.5.4
-	 * @todo  The mouse-over content truncation should be enabled by default to raise 
-	 * 				awareness of the functionality, prevent the screen from being filled on
-	 * 				mouse-over, and allow the use of ‘Continue Reading’ functionality.
+	 * @todo  The mouse-over content truncation should be enabled by default to raise
+	 *              awareness of the functionality, prevent the screen from being filled on
+	 *              mouse-over, and allow the use of ‘Continue Reading’ functionality.
 	 */
 	const C_STR_FOOTNOTES_MOUSE_OVER_BOX_EXCERPT_ENABLED = 'footnote_inputfield_custom_mouse_over_box_excerpt_enabled';
 
 	/**
-	 * Settings container key for the mouse-over box to define the max. length of 
+	 * Settings container key for the mouse-over box to define the max. length of
 	 * the enabled excerpt.
 	 *
 	 * The default truncation length is 200 chars.
@@ -215,17 +215,17 @@ class Footnotes_Settings {
 	 * These are checkboxes; the keyword `checked` is converted to `true`, whilst
 	 * an empty string (the default) is converted to `false`.
 	 *
-	 * Hooks should all be enabled by default to prevent users from thinking at 
-	 * first that the feature is broken in post titles (see {@link 
+	 * Hooks should all be enabled by default to prevent users from thinking at
+	 * first that the feature is broken in post titles (see {@link
 	 * https://wordpress.org/support/topic/more-feature-ideas/ here} for more
 	 * information).
 	 *
 	 * @var  string
 	 *
 	 * @since  1.5.5
-	 * @todo  In titles, footnotes are still buggy, because WordPress uses the 
-	 * 				title string in menus and in the title element, but Footnotes doesn't 
-	 * 				delete footnotes in them.
+	 * @todo  In titles, footnotes are still buggy, because WordPress uses the
+	 *              title string in menus and in the title element, but Footnotes doesn't
+	 *              delete footnotes in them.
 	 */
 	const C_STR_EXPERT_LOOKUP_THE_TITLE = 'footnote_inputfield_expert_lookup_the_title';
 
@@ -302,7 +302,7 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key for the mouse-over box to define the background color.
 	 *
-	 * Theme default background color is best, but theme default background color 
+	 * Theme default background color is best, but theme default background color
 	 * doesn't seem to exist.
 	 *
 	 * The default is currently `#ffffff` with `#000000` as the text color.
@@ -380,7 +380,7 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key for the mouse-over box to define the _y_-offset.
 	 *
-	 * The vertical offset must be negative for the box not to cover the current 
+	 * The vertical offset must be negative for the box not to cover the current
 	 * line of text.
 	 *
 	 * @var  int
@@ -474,7 +474,7 @@ class Footnotes_Settings {
 	 * that contain the strings ‘((’ and ‘))’ (i.e., the default footnote
 	 * start and end shortcodes), which causes issues with fake footnotes.
 	 *
-	 * Setting `the_content` priority to 10 instead of `PHP_INT_MAX` makes the 
+	 * Setting `the_content` priority to 10 instead of `PHP_INT_MAX` makes the
 	 * footnotes reference container display beneath the post and above other
 	 * features added by other plugins, e.g. related post lists and social buttons.
 	 *
@@ -482,9 +482,9 @@ class Footnotes_Settings {
 	 * YARPP} plugin to display related posts below the Footnotes reference container,
 	 * priority needs to be at least 1,200.
 	 *
-	 * `PHP_INT_MAX` cannot be reset by leaving the number box empty, because 
+	 * `PHP_INT_MAX` cannot be reset by leaving the number box empty, because
 	 * WebKit browsers don't allow it, so we must resort to -1.
-	 * 
+	 *
 	 * @var  int
 	 *
 	 * @since  2.0.5
@@ -539,7 +539,7 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key to enable the presence of a backlink separator.
 	 *
-	 * Backlink separators and terminators are often not preferred, but a choice 
+	 * Backlink separators and terminators are often not preferred, but a choice
 	 * should be provided along with the ability to customize.
 	 *
 	 * @var  string
@@ -690,7 +690,7 @@ class Footnotes_Settings {
 
 	/**
 	 * Settings container key for basic responsive page layout support options.
-	 * 
+	 *
 	 * Whether to concatenate an additional stylesheet.
 	 *
 	 * @var  string
@@ -756,7 +756,7 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key for URL wrap option.
 	 *
-	 * This is made optional because it causes weird line breaks. Unicode-compliant 
+	 * This is made optional because it causes weird line breaks. Unicode-compliant
 	 * browsers break URLs at slashes.
 	 *
 	 * @var  string
@@ -787,14 +787,14 @@ class Footnotes_Settings {
 	 * Settings container key to enable display of legacy Custom CSS metaboxes.
 	 *
 	 * This must be `false` if its setting is contained in the container to be hidden
-	 * because when saving, all missing constants are emptied, and {@see 
-	   Footnotes_Convert::to_bool()} converts empty to `false`.
+	 * because when saving, all missing constants are emptied, and {@see
+	 * Footnotes_Convert::to_bool()} converts empty to `false`.
 	 *
 	 * @var  string
 	 *
 	 * @since  2.2.2
-	 * @since  2.3.0  Swap migration Boolean, meaning ‘show legacy’ instead of 
-	 *								‘migration complete’, due to storage data structure constraints.
+	 * @since  2.3.0  Swap migration Boolean, meaning ‘show legacy’ instead of
+	 *                              ‘migration complete’, due to storage data structure constraints.
 	 */
 	const C_STR_CUSTOM_CSS_LEGACY_ENABLE = 'footnote_inputfield_custom_css_legacy_enable';
 
@@ -806,7 +806,6 @@ class Footnotes_Settings {
 	 * @var  string
 	 *
 	 * @since  2.2.5
-	 *
 	 */
 	const C_STR_FOOTNOTES_ALTERNATIVE_MOUSE_OVER_BOX_POSITION = 'footnotes_inputfield_alternative_mouse_over_box_position';
 
@@ -905,7 +904,7 @@ class Footnotes_Settings {
 
 	/**
 	 * Settings container key for the fragment ID slug in footnotes.
-	 
+
 	 * @var  string
 	 *
 	 * @since  2.3.0
@@ -933,9 +932,9 @@ class Footnotes_Settings {
 	/**
 	 * Settings container key to enable backlink tooltips.
 	 *
-	 * When hard links are enabled, clicks on the backlinks are logged in the 
+	 * When hard links are enabled, clicks on the backlinks are logged in the
 	 * browsing history, along with clicks on the referrers.
-	 * This tooltip hints to use the backbutton instead, so the history gets 
+	 * This tooltip hints to use the backbutton instead, so the history gets
 	 * streamlined again.
 	 * See {@link https://wordpress.org/support/topic/making-it-amp-compatible/#post-13837359
 	 * here} for more information.
@@ -961,9 +960,9 @@ class Footnotes_Settings {
 	 * The first implementation used a fixed shortcode provided in the changelog,
 	 * but footnotes should have freely-configurable shortcodes.
 	 *
-	 * Tooltips can display another content than the footnote entry in the 
-	 * reference container. The trigger is a shortcode in the footnote text 
-	 * separating the tooltip text from the note. That is consistent with what 
+	 * Tooltips can display another content than the footnote entry in the
+	 * reference container. The trigger is a shortcode in the footnote text
+	 * separating the tooltip text from the note. That is consistent with what
 	 * WordPress does for excerpts.
 	 *
 	 * @var  string
@@ -973,11 +972,11 @@ class Footnotes_Settings {
 	const C_STR_FOOTNOTES_TOOLTIP_EXCERPT_DELIMITER = 'footnotes_inputfield_tooltip_excerpt_delimiter';
 
 	/**
-	 * Settings container key to enable mirroring the tooltip excerpt in the 
+	 * Settings container key to enable mirroring the tooltip excerpt in the
 	 * reference container.
 	 *
 	 * Tooltips, even jQuery-driven, may be hard to consult on mobiles.
-	 * This option allows users to read the tooltip content in the reference 
+	 * This option allows users to read the tooltip content in the reference
 	 * container too. See {@link https://wordpress.org/support/topic/change-tooltip-text/#post-13935050
 	 * here} for more information, and {@link https://wordpress.org/support/topic/change-tooltip-text/#post-13935488
 	 * here} for why this must not be the default behavior.
@@ -989,7 +988,7 @@ class Footnotes_Settings {
 	const C_STR_FOOTNOTES_TOOLTIP_EXCERPT_MIRROR_ENABLE = 'footnotes_inputfield_tooltip_excerpt_mirror_enable';
 
 	/**
-	 * Settings container key to configure the tooltip excerpt separator in the 
+	 * Settings container key to configure the tooltip excerpt separator in the
 	 * reference container.
 	 *
 	 * @var  string
@@ -1135,7 +1134,7 @@ class Footnotes_Settings {
 	 *
 	 * @since  1.5.0
 	 * @todo  Review. Why are the constants just initialised with these values?
-	 *				At the very least, we should stop using ‘yes’ to mean `true` etc.
+	 *              At the very least, we should stop using ‘yes’ to mean `true` etc.
 	 */
 	private $a_arr_default = array(
 
@@ -1357,7 +1356,7 @@ class Footnotes_Settings {
 	/**
 	 * Returns the name of a specified Settings Container.
 	 *
-	 * @param  int  $p_int_index  Settings Container index.
+	 * @param  int $p_int_index  Settings Container index.
 	 * @return  str  Settings Container name.
 	 *
 	 * @since  1.5.0
@@ -1369,7 +1368,7 @@ class Footnotes_Settings {
 	/**
 	 * Returns the default value(s) of a specific Settings Container.
 	 *
-	 * @param  int  $p_int_index  Settings Container index.
+	 * @param  int $p_int_index  Settings Container index.
 	 * @return  (string|int)[]  Settings Container default value(s).
 	 *
 	 * @since  1.5.6
@@ -1396,7 +1395,7 @@ class Footnotes_Settings {
 	/**
 	 * Loads all settings from specified Settings Containers.
 	 *
-	 * @param  int  $p_int_index  Settings container index.
+	 * @param  int $p_int_index  Settings container index.
 	 * @return  (string|int)[]  Loaded settings (or defaults if specified container is empty).
 	 *
 	 * @since  1.5.0
@@ -1426,8 +1425,8 @@ class Footnotes_Settings {
 	/**
 	 * Updates a whole Setting Container on save.
 	 *
-	 * @param  int    $p_int_index  Index of the Setting Container.
-	 * @param  array  $p_arr_new_values  The new Settings value(s).
+	 * @param  int   $p_int_index  Index of the Setting Container.
+	 * @param  array $p_arr_new_values  The new Settings value(s).
 	 * @return  bool
 	 *
 	 * @since  1.5.0
@@ -1443,7 +1442,7 @@ class Footnotes_Settings {
 	/**
 	 * Returns the value of specified Setting.
 	 *
-	 * @param  string  $p_str_key  Setting key.
+	 * @param  string $p_str_key  Setting key.
 	 * @return  string|int|null  Setting value, or `null` if setting key is invalid.
 	 *
 	 * @since  1.5.0
diff --git a/src/includes/class-footnotes-template.php b/src/includes/class-footnotes-template.php
index 3aa0b23..41c59d9 100644
--- a/src/includes/class-footnotes-template.php
+++ b/src/includes/class-footnotes-template.php
@@ -2,22 +2,21 @@
 /**
  * File providing the `Footnotes_Template` class.
  *
- *
  * @package  footnotes
  * @subpackage  includes
  *
  * @since  1.5.0
  * @since  2.2.6  Add support for custom templates in sibling folder.
  * @since  2.8.0  Rename file from `templates.php` to `class-footnotes-templates.php`,
- *								rename `class/` sub-directory to `includes/`.
+ *                              rename `class/` sub-directory to `includes/`.
  */
 
 /**
  * Class defining template rendering.
  *
- * Loads a template file, replaces all Placeholders and returns the replaced 
+ * Loads a template file, replaces all Placeholders and returns the replaced
  * file content.
- 
+
  * @package  footnotes
  * @subpackage  includes
  *
@@ -74,9 +73,9 @@ class Footnotes_Template {
 	/**
 	 * Class Constructor. Reads and loads the template file without replace any placeholder.
 	 *
-	 * @param  string  $p_str_file_type  Template file type.
-	 * @param  string  $p_str_file_name  Template file name inside the `partials/` directory, without the file extension.
-	 * @param  string  $p_str_extension  (optional) Template file extension (default: 'html').
+	 * @param  string $p_str_file_type  Template file type.
+	 * @param  string $p_str_file_name  Template file name inside the `partials/` directory, without the file extension.
+	 * @param  string $p_str_extension  (optional) Template file extension (default: 'html').
 	 *
 	 * @since  1.5.0
 	 * @todo  Refactor templating.
@@ -86,9 +85,9 @@ class Footnotes_Template {
 		if ( empty( $p_str_file_type ) || empty( $p_str_file_name ) ) {
 			return;
 		}
-		
+
 		$this->plugin_directory = plugin_dir_path( dirname( __FILE__ ) );
-		
+
 		$template = $this->get_template( $p_str_file_type, $p_str_file_name, $p_str_extension );
 		if ( $template ) {
 			$this->process_template( $template );
@@ -101,7 +100,7 @@ class Footnotes_Template {
 	/**
 	 * Replace all placeholders specified in array.
 	 *
-	 * @param  array  $p_arr_placeholders  Placeholders (key = placeholder, value = value).
+	 * @param  array $p_arr_placeholders  Placeholders (key = placeholder, value = value).
 	 * @return  bool  `true` on Success, `false` if placeholders invalid.
 	 *
 	 * @since  1.5.0
@@ -149,7 +148,7 @@ class Footnotes_Template {
 	/**
 	 * Process template file.
 	 *
-	 * @param  string  $template  The template to be processed.
+	 * @param  string $template  The template to be processed.
 	 * @return  void
 	 *
 	 * @since  2.4.0d3
@@ -171,9 +170,9 @@ class Footnotes_Template {
 	/**
 	 * Get the template.
 	 *
-	 * @param  string  $p_str_file_type  The file type of the template.
-	 * @param  string  $p_str_file_name  The file name of the template.
-	 * @param  string  $p_str_extension  The file extension of the template.
+	 * @param  string $p_str_file_type  The file type of the template.
+	 * @param  string $p_str_file_name  The file name of the template.
+	 * @param  string $p_str_extension  The file extension of the template.
 	 * @return  mixed  `false` or the template path
 	 *
 	 * @since 2.5.0
diff --git a/src/includes/class-footnotes.php b/src/includes/class-footnotes.php
index 17daea1..7489933 100644
--- a/src/includes/class-footnotes.php
+++ b/src/includes/class-footnotes.php
@@ -5,12 +5,10 @@
  * A class definition that includes attributes and functions used across both the
  * public-facing side of the site and the admin area.
  *
- * @package  footnotes
- * @subpackage  includes
- *
- * @since  1.5.0
- * @since  2.8.0  Rename file from `wysiwyg.php` to `class-footnotes-wysiwyg.php`,
- *								rename `class/` sub-directory to `includes/`.
+ * @package footnotes\includes
+ * @since 1.5.0
+ * @since 2.8.0 Rename file from `init.php` to `class-footnotes.php`, rename
+ *                          `class/` sub-directory to `includes/`.
  */
 
 /**
@@ -18,40 +16,37 @@
  *
  * This is used to define internationalization, admin-specific hooks, and
  * public-facing site hooks.
- 
- * @package  footnotes
- * @subpackage  includes
- *
- * @since  1.5.0
- * @since  2.8.0
+
+ * @package footnotes\includes
+ * @since 1.5.0
  */
 class Footnotes {
 	/**
 	 * The loader that's responsible for maintaining and registering all hooks that power
 	 * the plugin.
 	 *
-	 * @access  protected
-	 * @var  Footnotes_Loader  $loader  Maintains and registers all hooks for the plugin.
+	 * @since 2.8.0
 	 *
-	 * @since  2.8.0
+	 * @var Footnotes_Loader $loader Maintains and registers all hooks for the plugin.
 	 */
 	protected $loader;
 
 	/**
 	 * The unique identifier of this plugin
 	 *
-	 * @since  2.8.0
-	 * @access  protected
-	 * @var  string  $plugin_name  The string used to uniquely identify this plugin.
+	 * @since 2.8.0
+	 *
+	 * @var string $plugin_name The string used to uniquely identify this plugin.
 	 */
 	protected $plugin_name;
 
 	/**
 	 * The current version of the plugin.
 	 *
-	 * @since  2.8.0
-	 * @access  protected
-	 * @var  string  $version  The current version of the plugin.
+	 * @since 2.8.0
+	 * @see PLUGIN_VERSION
+	 *
+	 * @var string $version The current version of the plugin.
 	 */
 	protected $version;
 
@@ -59,12 +54,13 @@ class Footnotes {
 	 * Build the core of the plugin.
 	 *
 	 * Set the plugin name and the plugin version that can be used throughout the
-	 * plugin. Load the dependencies, define the locale, and set the hooks for 
+	 * plugin. Load the dependencies, define the locale, and set the hooks for
 	 * the admin area and the public-facing side of the site.
 	 *
-	 * @uses  PLUGIN_VERSION  The plugin version constant.
+	 * @since 1.0.0
+	 * @see PLUGIN_VERSION The plugin version constant.
 	 *
-	 * @since  1.0.0
+	 * @return void
 	 */
 	public function __construct() {
 		if ( defined( 'PLUGIN_VERSION' ) ) {
@@ -78,7 +74,6 @@ class Footnotes {
 		$this->set_locale();
 		$this->define_admin_hooks();
 		$this->define_public_hooks();
-
 	}
 
 	/**
@@ -86,22 +81,21 @@ class Footnotes {
 	 *
 	 * Includes the following files that make up the plugin:
 	 *
-	 * - `Footnotes_Loader`. Orchestrates the hooks of the plugin.
-	 * - `Footnotes_i18n`. Defines internationalization functionality.
-	 * - `Footnotes_Config`. Defines plugin details.
-	 * - `Footnotes_Convert`. Provides conversion methods.
-	 * - `Footnotes_Settings`. Defines customisable plugin settings.
-	 * - `Footnotes_Template`. Handles template rendering.
-	 * - `Footnotes_Admin`. Defines all hooks for the admin area.
-	 * - `Footnotes_Public`. Defines all hooks for the public side of the site.
+	 * - {@see Footnotes_Loader}: orchestrates the hooks of the plugin;
+	 * - {@see Footnotes_i18n}: defines internationalization functionality;
+	 * - {@see Footnotes_Config}: defines plugin details;
+	 * - {@see Footnotes_Convert}: provides conversion methods;
+	 * - {@see Footnotes_Settings}: defines customisable plugin settings;
+	 * - {@see Footnotes_Template}: handles template rendering;
+	 * - {@see Footnotes_Admin}: defines all hooks for the admin area; and
+	 * - {@see Footnotes_Public}: defines all hooks for the public side of the site.
 	 *
 	 * Creates an instance of the loader which will be used to register the hooks
 	 * with WordPress.
 	 *
-	 * @access  private
-	 * @uses  Footnotes_Loader  Loads plugin dependencies.
+	 * @since 2.8.0
 	 *
-	 * @since  2.8.0
+	 * @return void
 	 */
 	private function load_dependencies() {
 
@@ -143,13 +137,13 @@ class Footnotes {
 	/**
 	 * Define the locale for this plugin for internationalization.
 	 *
-	 * Uses the {@see Footnotes_i18n} class in order to set the domain and to 
+	 * Uses {@see Footnotes_i18n} in order to set the domain and to
 	 * register the hook with WordPress.
 	 *
-	 * @access  private
-	 * @uses  Footnotes_i18n  Handles initialization functions.
+	 * @since 2.8.0
+	 * @uses Footnotes_i18n Handles initialization functions.
 	 *
-	 * @since  2.8.0
+	 * @return void
 	 */
 	private function set_locale() {
 
@@ -160,14 +154,14 @@ class Footnotes {
 	}
 
 	/**
-	 * Register all of the hooks related to the admin area functionality of the 
+	 * Register all of the hooks related to the admin area functionality of the
 	 * plugin.
 	 *
-	 * @access  private
-	 * @uses  Footnotes_Admin  Defines admin functionality.
+	 * @since 1.5.0
+	 * @since 2.8.0 Moved hook registrations from various classes into `Footnotes_Admin`.
+	 * @uses Footnotes_Admin Defines admin functionality.
 	 *
-	 * @since  1.5.0
-	 * @since  2.8.0 Moved hook registrations from various classes into `Footnotes_Admin`.
+	 * @return void
 	 */
 	private function define_admin_hooks() {
 
@@ -192,13 +186,13 @@ class Footnotes {
 	}
 
 	/**
-	 * Register all of the hooks related to the public-facing functionality of 
+	 * Register all of the hooks related to the public-facing functionality of
 	 * the plugin.
 	 *
-	 * @access   private
-	 * @uses  Footnotes_Admin  Defines public-facing functionality.
+	 * @since 2.8.0
+	 * @uses Footnotes_Admin Defines public-facing functionality.
 	 *
-	 * @since  2.8.0
+	 * @return void
 	 */
 	private function define_public_hooks() {
 
@@ -213,43 +207,39 @@ class Footnotes {
 	/**
 	 * Runs the loader to execute all of the hooks with WordPress.
 	 *
-	 * @since  1.5.0
+	 * @since 1.5.0
+	 *
+	 * @return void
 	 */
 	public function run() {
 		$this->loader->run();
 	}
 
 	/**
-	 * Gets the name of the plugin used to uniquely identify it within the 
+	 * Gets the name of the plugin used to uniquely identify it within the
 	 * context of WordPress and to define internationalization functionality.
 	 *
-	 * @return  string  The name of the plugin.
-	 *
-	 * @since  2.8.0
+	 * @since 2.8.0
 	 */
-	public function get_plugin_name() {
+	public function get_plugin_name(): string {
 		return $this->plugin_name;
 	}
 
 	/**
 	 * Returns a reference to the class that orchestrates the hooks with the plugin.
 	 *
-	 * @return  Footnotes_Loader  Orchestrates the hooks of the plugin.
-	 *
-	 * @since  2.8.0
+	 * @since 2.8.0
 	 */
-	public function get_loader() {
+	public function get_loader(): Footnotes_Loader {
 		return $this->loader;
 	}
 
 	/**
 	 * Gets the version number of the plugin.
 	 *
-	 * @return  string  The version number of the plugin.
-	 *
-	 * @since  2.8.0
+	 * @since 2.8.0
 	 */
-	public function get_version() {
+	public function get_version(): string {
 		return $this->version;
 	}
 }
diff --git a/src/public/class-footnotes-parser.php b/src/public/class-footnotes-parser.php
index 004bf82..9ae74f0 100644
--- a/src/public/class-footnotes-parser.php
+++ b/src/public/class-footnotes-parser.php
@@ -6,7 +6,7 @@
  * @since  1.5.0
  * @since  2.0.5  Enable all hoooks by default.
  * @since  2.8.0  Rename file from `task.php` to `class-footnotes-parser.php`,
- *								move from `class/` sub-directory to `public/`.
+ *                              move from `class/` sub-directory to `public/`.
  */
 
 /**
@@ -167,7 +167,7 @@ class Footnotes_Parser {
 	 * @var  string
 	 */
 	public static $a_str_link_close_tag = '';
-	
+
 	/*
 	 * Dedicated tooltip text.
 	 *
@@ -222,7 +222,7 @@ class Footnotes_Parser {
 	/**
 	 * Footnote delimiter start short code in RegEx format.
 	 *
-	 * @since  2.4.0 
+	 * @since  2.4.0
 	 * @since  2.6.2  Move from global constant to class property.
 	 * @var  string
 	 */
@@ -312,10 +312,11 @@ class Footnotes_Parser {
 			/**
 			 * Hook for category pages.
 			 *
-			 * Category pages can have rich HTML content in a term description with 
+			 * Category pages can have rich HTML content in a term description with
 			 * article status.
-			 * For this to happen, WordPress' built-in partial HTML blocker needs to 
+			 * For this to happen, WordPress' built-in partial HTML blocker needs to
 			 * be disabled.
+			 *
 			 * @link https://docs.woocommerce.com/document/allow-html-in-term-category-tag-descriptions/
 			 *
 			 * @since  2.5.0
@@ -556,7 +557,6 @@ class Footnotes_Parser {
 
 			// Tooltip position, dimensions and timing.
 			if ( ! Footnotes_Public::$a_bool_alternative_tooltips_enabled && ! Footnotes_Public::$a_bool_amp_enabled ) {
-
 				/*
 				 * Dimensions of jQuery tooltips.
 				 *
@@ -748,7 +748,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_content  Title.
+	 * @param  string $p_str_content  Title.
 	 * @return  string  $p_str_content  Title with replaced footnotes.
 	 */
 	public function footnotes_in_title( $p_str_content ) {
@@ -761,7 +761,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_content  Page/Post content.
+	 * @param  string $p_str_content  Page/Post content.
 	 * @return  string  $p_str_content  Content with replaced footnotes.
 	 */
 	public function footnotes_in_content( $p_str_content ) {
@@ -809,7 +809,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_excerpt  Excerpt content.
+	 * @param  string $p_str_excerpt  Excerpt content.
 	 * @return  string  $p_str_excerpt  Processed or new excerpt.
 	 */
 	public function footnotes_in_excerpt( $p_str_excerpt ) {
@@ -830,12 +830,13 @@ class Footnotes_Parser {
 	 * Generates excerpt on the basis of the post.
 	 *
 	 * Applies full WordPress excerpt processing.
+	 *
 	 * @link https://developer.wordpress.org/reference/functions/wp_trim_excerpt/
 	 * @link https://developer.wordpress.org/reference/functions/wp_trim_words/
 	 *
 	 * @since  2.6.2
 	 *
-	 * @param  string  $p_str_content  The post.
+	 * @param  string $p_str_content  The post.
 	 * @return  string  $p_str_content  An excerpt of the post.
 	 */
 	public function generate_excerpt( $p_str_content ) {
@@ -873,13 +874,14 @@ class Footnotes_Parser {
 	 * Generates excerpt with footnotes on the basis of the post.
 	 *
 	 * Does not apply full WordPress excerpt processing.
+	 *
 	 * @see self::generate_excerpt()
 	 * Uses information and some code from Advanced Excerpt.
 	 * @link https://wordpress.org/plugins/advanced-excerpt/
 	 *
 	 * @since  2.6.3
 	 *
-	 * @param  string  $p_str_content  The post.
+	 * @param  string $p_str_content  The post.
 	 * @return  string  $p_str_content  An excerpt of the post.
 	 */
 	public function generate_excerpt_with_footnotes( $p_str_content ) {
@@ -980,7 +982,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_content  Widget content.
+	 * @param  string $p_str_content  Widget content.
 	 * @return  string  $p_str_content  Content with replaced footnotes.
 	 */
 	public function footnotes_in_widget_title( $p_str_content ) {
@@ -993,7 +995,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_content  Widget content.
+	 * @param  string $p_str_content  Widget content.
 	 * @return  string  $p_str_content  Content with replaced footnotes.
 	 */
 	public function footnotes_in_widget_text( $p_str_content ) {
@@ -1008,9 +1010,9 @@ class Footnotes_Parser {
 	 *
 	 * @since  1.5.0
 	 *
-	 * @param  string  $p_str_content  Any string that may contain footnotes to be replaced.
-	 * @param  bool  $p_bool_output_references  Appends the Reference Container to the output if set to true, default true.
-	 * @param  bool  $p_bool_hide_footnotes_text  Hide footnotes found in the string.
+	 * @param  string $p_str_content  Any string that may contain footnotes to be replaced.
+	 * @param  bool   $p_bool_output_references  Appends the Reference Container to the output if set to true, default true.
+	 * @param  bool   $p_bool_hide_footnotes_text  Hide footnotes found in the string.
 	 * @return  string
 	 */
 	public function exec( $p_str_content, $p_bool_output_references = false, $p_bool_hide_footnotes_text = false ) {
@@ -1021,7 +1023,7 @@ class Footnotes_Parser {
 		/*
 		 * Reference container customized positioning through shortcode.
 		 */
-		 
+
 		// Append the reference container or insert at shortcode.
 		$l_str_reference_container_position_shortcode = Footnotes_Settings::instance()->get( Footnotes_Settings::C_STR_REFERENCE_CONTAINER_POSITION_SHORTCODE );
 		if ( empty( $l_str_reference_container_position_shortcode ) ) {
@@ -1066,7 +1068,7 @@ class Footnotes_Parser {
 	 *
 	 * @since  2.1.14
 	 *
-	 * @param  string  $p_str_content  The footnote, including delimiters.
+	 * @param  string $p_str_content  The footnote, including delimiters.
 	 */
 	public function unify_delimiters( $p_str_content ) {
 
@@ -1132,7 +1134,7 @@ class Footnotes_Parser {
 	 * @todo  Refactor to parse DOM rather than using RegEx.
 	 *
 	 * @param  string $p_str_content  Any content to be parsed for footnotes.
-	 * @param  bool  $p_bool_hide_footnotes_text  Hide footnotes found in the string.
+	 * @param  bool   $p_bool_hide_footnotes_text  Hide footnotes found in the string.
 	 * @return  string
 	 */
 	public function search( $p_str_content, $p_bool_hide_footnotes_text ) {
@@ -1146,7 +1148,7 @@ class Footnotes_Parser {
 		 * If footnotes short codes are unbalanced, and syntax validation is not disabled,
 		 * prepend a warning to the content; displays de facto beneath the post title.
 		 */
-		 
+
 		// If enabled.
 		if ( Footnotes_Convert::to_bool( Footnotes_Settings::instance()->get( Footnotes_Settings::C_STR_FOOTNOTE_SHORTCODE_SYNTAX_VALIDATION_ENABLE ) ) ) {
 
@@ -1207,7 +1209,7 @@ class Footnotes_Parser {
 		/*
 		 * Patch to allow footnotes in input field labels.
 		 *
-		 * When the HTML 'input' element 'value' attribute value is derived from 
+		 * When the HTML 'input' element 'value' attribute value is derived from
 		 * 'label', footnotes need to be removed in the value of 'value'.
 		 */
 		$l_str_value_regex = '#(<input [^>]+?value=["\'][^>]+?)' . self::$a_str_start_tag_regex . '[^>]+?' . self::$a_str_end_tag_regex . '#';
@@ -1461,16 +1463,7 @@ class Footnotes_Parser {
 
 						$l_str_excerpt_text .= '>';
 
-						/**
-						 * Configurable read-on button label.
-						 *
-						 * - Adding: Tooltips: Read-on button: Label: configurable instead of localizable, thanks to @rovanov example provision.
-						 *
-						 * @reporter @rovanov
-						 * @link https://wordpress.org/support/topic/offset-x-axis-and-offset-y-axis-does-not-working/
-						 *
-						 * @since  2.1.0
-						 */
+						// Configurable read-on button label.
 						$l_str_excerpt_text .= Footnotes_Settings::instance()->get( Footnotes_Settings::C_STR_FOOTNOTES_TOOLTIP_READON_LABEL );
 
 						$l_str_excerpt_text .= self::$a_bool_hard_links_enabled ? '</a>' : '</span>';
@@ -1505,7 +1498,7 @@ class Footnotes_Parser {
 					$l_str_footnote_link_argument .= $l_int_index;
 					$l_str_footnote_link_argument .= '" class="footnote_hard_link"';
 
-					/**
+					/*
 					 * Compose fragment ID anchor with offset, for use in reference container.
 					 * Empty span, child of empty span, to avoid tall dotted rectangles in browser.
 					 */
@@ -1516,7 +1509,6 @@ class Footnotes_Parser {
 					$l_str_referrer_anchor_element .= '" class="footnote_referrer_anchor"></span></span>';
 
 				} else {
-
 					/*
 					 * Initialize hard link variables when hard links are disabled.
 					 *
@@ -1538,6 +1530,7 @@ class Footnotes_Parser {
 				// Determine tooltip content.
 				if ( Footnotes_Public::$a_bool_tooltips_enabled ) {
 					$l_str_tooltip_content = $l_bool_has_tooltip_text ? $l_str_tooltip_text : $l_str_excerpt_text;
+
 					/*
 					 * Ensures paragraph separation
 					 *
@@ -1670,7 +1663,7 @@ class Footnotes_Parser {
 		/*
 		 * Footnote index backlink symbol.
 		 */
-		 
+
 		// If the backlink symbol is enabled.
 		if ( Footnotes_Convert::to_bool( Footnotes_Settings::instance()->get( Footnotes_Settings::C_STR_REFERENCE_CONTAINER_BACKLINK_SYMBOL_ENABLE ) ) ) {
 
@@ -1878,7 +1871,6 @@ class Footnotes_Parser {
 			$l_str_hard_link_address = '';
 
 			if ( self::$a_bool_hard_links_enabled ) {
-
 				/*
 				 * Use-Backbutton-Hint tooltip, optional and configurable.
 				 *
@@ -1931,7 +1923,7 @@ class Footnotes_Parser {
 			 *
 			 * @since  2.1.1
 			 */
-			 
+
 			// Set a flag to check for the combined status of a footnote item.
 			$l_bool_flag_combined = false;
 
@@ -1960,7 +1952,7 @@ class Footnotes_Parser {
 				/*
 				 * The click event goes in the table cell if footnote remains single.
 				 */
-				 
+
 				$l_str_backlink_event = ' onclick="footnote_moveToAnchor_';
 
 				$l_str_backlink_event .= self::$a_int_post_id;
diff --git a/src/public/class-footnotes-public.php b/src/public/class-footnotes-public.php
index c169c00..90f0ba0 100644
--- a/src/public/class-footnotes-public.php
+++ b/src/public/class-footnotes-public.php
@@ -21,7 +21,7 @@ class Footnotes_Public {
 	 * The ID of this plugin.
 	 *
 	 * @since  2.8.0
-	 
+
 	 * @access  private
 	 * @var  string  $plugin_name  The ID of this plugin.
 	 */
@@ -31,7 +31,7 @@ class Footnotes_Public {
 	 * The version of this plugin.
 	 *
 	 * @since  2.8.0
-	
+
 	 * @access  private
 	 * @var  string  $version  The current version of this plugin.
 	 */
@@ -100,8 +100,8 @@ class Footnotes_Public {
 	 * Initialize the class and set its properties.
 	 *
 	 * @since  2.8.0
-	 * @param  string  $plugin_name  The name of this plugin.
-	 * @param  string  $version  The version of this plugin.
+	 * @param  string $plugin_name  The name of this plugin.
+	 * @param  string $version  The version of this plugin.
 	 */
 	public function __construct( $plugin_name, $version ) {
 
diff --git a/src/public/widget/class-footnotes-widget-base.php b/src/public/widget/class-footnotes-widget-base.php
index 584d6b8..b472674 100644
--- a/src/public/widget/class-footnotes-widget-base.php
+++ b/src/public/widget/class-footnotes-widget-base.php
@@ -64,7 +64,7 @@ abstract class Footnotes_Widget_Base extends WP_Widget {
 	protected function get_widget_width() {
 		return 250;
 	}
-	
+
 	/**
 	 * Registers the child Widget to WordPress.
 	 *
@@ -87,5 +87,5 @@ abstract class Footnotes_Widget_Base extends WP_Widget {
 			$l_arr_control_options // Optional Widget Control Options.
 		);
 	}
-	
+
 }
diff --git a/src/public/widget/class-footnotes-widget-reference-container.php b/src/public/widget/class-footnotes-widget-reference-container.php
index d4bd527..0e94932 100644
--- a/src/public/widget/class-footnotes-widget-reference-container.php
+++ b/src/public/widget/class-footnotes-widget-reference-container.php
@@ -37,7 +37,7 @@ class Footnotes_Widget_Reference_Container extends Footnotes_Widget_Base {
 	 *
 	 * @since  2.8.0
 	 *
-	 * @param  string  $plugin_name  The name of this plugin.
+	 * @param  string $plugin_name  The name of this plugin.
 	 */
 	public function __construct( $plugin_name ) {
 		parent::__construct();
@@ -86,7 +86,7 @@ class Footnotes_Widget_Reference_Container extends Footnotes_Widget_Base {
 	 * @link  https://developer.wordpress.org/reference/classes/wp_widget/form/ `WP_Widget::form()`
 	 * @since  1.5.0
 	 *
-	 * @param  mixed  $instance  The instance of the widget.
+	 * @param  mixed $instance  The instance of the widget.
 	 */
 	public function form( $instance ) {
 		echo __( 'The widget defines the position of the reference container if set to &ldquo;widget area&rdquo;.', 'footnotes' );
@@ -98,8 +98,8 @@ class Footnotes_Widget_Reference_Container extends Footnotes_Widget_Base {
 	 * @link  https://developer.wordpress.org/reference/classes/wp_widget/widget/ `WP_Widget::widget()`
 	 * @since  1.5.0
 	 *
-	 * @param  mixed  $args  The widget's arguments.
-	 * @param  mixed  $instance  The instance of the widget.
+	 * @param  mixed $args  The widget's arguments.
+	 * @param  mixed $instance  The instance of the widget.
 	 */
 	public function widget( $args, $instance ) {
 		global $footnotes;