=== ExtenderX – Site Enhancements, Animations & Block Extensions ===
Version: 1.8.1
Author: WPXERO
Author URI: https://wpxero.com/plugins/extenderx
Donate link: https://wpxero.com/plugins/extenderx/pricing
Contributors: wpxero
Tags: animation, dark mode, maintenance mode, scroll effects, gutenberg blocks
Requires at least: 6.2
Tested up to: 7.0
Stable tag: 1.8.1
Requires PHP: 7.4
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html

All-in-one WordPress site enhancement toolkit: scroll animations, dark mode, sticky header, maintenance mode, code snippets, seasonal effects & more.

== Description ==

**ExtenderX is a complete WordPress site enhancement toolkit** — one plugin that handles scroll animations, site-wide motion effects, dark mode, navigation tools, content protection, marketing widgets, code snippets, maintenance mode, and more. Enable only what you need. Everything else loads zero assets.

It replaces a stack of single-purpose plugins with a single, well-organized dashboard covering three areas: **Site Enhancements** (site-wide tools for any theme), **Block Editor Extensions** (Gutenberg-specific block animations), and **Custom Code** (header/footer scripts and snippet management).

[View demo →](https://wordpress.org/plugins/extenderx/?preview=1) | [Pro pricing →](https://wpxero.com/plugins/extenderx/pricing)

---

### Site Enhancements

Site Enhancements work on any WordPress theme — classic or block, with or without the Gutenberg editor.

**Appearance**
- **Dark Mode** — visitor-facing dark/light toggle powered by DarkReader. Works with any theme, no configuration.
- **Skeleton Loading Screen** (Pro) — show a skeleton placeholder while page content loads.
- **Preloader** (Pro) — display a branded animation before the page reveals.

**Navigation & Scrolling**
- **Back to Top Button** — floating button with style presets, icon, position, and visibility options.
- **Scroll to Bottom Button** (Pro) — one-click jump to the bottom of the page; stacks neatly alongside the Back to Top button.
- **Sticky Header** — keeps your navigation fixed at the top of the viewport as visitors scroll.
- **Sticky Footer Bar** — persistent footer strip across all pages.
- **Scrollbar Styler** (Pro) — customize the browser scrollbar color and appearance.
- **Smooth Scrolling** (Pro) — buttery page scrolling powered by Lenis.
- **Scroll Progress Bar** — visual reading-progress indicator at the top of the page.
- **Scrollspy** — automatically highlights the active navigation link based on scroll position.
- **Smart Scroll** — auto-hides the header when scrolling down, reveals it when scrolling up.

**Motion & Animations** (Pro, Beta)
- **Site-Wide Animations** — set one reveal style and it applies automatically to your content across every page. Supports block-type targeting, stagger delays, and per-page or per-block overrides directly in the editor.
- **Scroll-Linked Effects** — parallax drift and scroll-progress scrub for elements you target.
- **Import / Export** — back up your Motion configuration or move it between sites.

**Seasonal Effects**
Free: Winter Snow, Autumn Leaves, Falling Hearts.
Pro: Spring Petals, Summer Bubbles, Christmas Lights, Fireworks, Halloween Bats, Ramadan Lanterns, Black Friday & Cyber Monday confetti, Weather, Particle Background, Fireflies, Twinkling Stars, Floating Emojis, Floating Shapes, Light Beams, Mouse Trail.
All effects automatically honor visitors' "prefers-reduced-motion" system setting.
Pro adds scheduling by date range, page targeting, and per-effect color customization.

**Content Protection**
- Disable Right Click — prevent the browser context menu.
- Disable Copy — prevent text selection and copying.
- Disable Inspect — deter access to browser developer tools.
- Disable Image Drag — stop images being saved by drag-and-drop.
- Hide Admin Bar on Frontend — hide the WordPress toolbar for logged-in visitors.

**Marketing**
- **Announcement Bar** — dismissible top or bottom banner for offers and notices.
- **Floating CTA Button** — fixed call-to-action button that follows the visitor.
- **CTA Pulse Animation** — draw attention to any button with a pulse ring.
- **Sticky WhatsApp Button** (Pro) — floating WhatsApp chat widget.
- **Global Countdown Banner** (Pro) — site-wide urgency timer for sales and launches.

**Site Access Modes**
- **Maintenance Mode** — show visitors a maintenance page while you work; admins keep full site access.
- **Coming Soon Mode** — full-page coming-soon screen before launch.
- **Age Verification** (Pro) — require visitors to confirm their age before entering.
- **Cookie Consent** (Pro) — GDPR-friendly cookie consent banner.
- **GDPR Notice** (Pro) — compliance notice for EU visitors.
- **Exit-Intent Popup** (Pro) — trigger a popup when a visitor is about to leave.

---

### Block Editor Extensions

Six extensions added to the Gutenberg sidebar panel for every registered block — core WordPress blocks and third-party block libraries alike. No replacement blocks. No shortcodes.

**Entrance Animation** — scroll-triggered entrance effects (fade in, slide up, zoom, flip, bounce, and more) with duration, delay, and easing controls. Animations fire once when the block enters the viewport.

**Floating Animation** — smooth, continuous looping motion for hero sections, testimonial cards, and promotional banners.

**Tilt Animation** — GPU-accelerated 3D tilt that responds to cursor movement, powered by VanillaTilt.js. Ideal for cards, images, and pricing tables.

**Visibility Control** — show or hide any block on desktop, tablet, or mobile independently using clean CSS. No duplicate content in the HTML.

**Wrapper Link** — make any block — group, column, image, card — fully clickable with a custom URL.

**Tooltip** — accessible hover tooltips on any block, rendered by Tippy.js.

All six extensions load conditionally: scripts and styles are added only to pages where at least one block actually uses them.

**Compatible block libraries:** Kadence Blocks · Spectra (UAG) · Stackable · Essential Blocks · Ultimate Blocks · Ghostkit · Gutenverse · GutenKit · Otter Blocks · Greenshift · CoBlocks · GenerateBlocks · All core WordPress blocks

---

### Custom Code

**Insert Headers & Footers** — add HTML, CSS, or JavaScript to your site's `<head>`, after the opening `<body>`, or before the closing `</body>` — without editing theme files. Perfect for Google Analytics, Google Tag Manager, Meta Pixel, AdSense, and site verification tags.

**Code Snippet Library** — create, name, and toggle reusable HTML, CSS, and JavaScript snippets from a clean table. Each snippet has its own on/off switch; disabled snippets stay saved but stop running.

Pro adds PHP snippets, conditional display logic (show snippets on specific pages or post types), and scheduling.

---

### Free vs. Pro at a Glance

**Free includes:**
All 6 Block Editor extensions · Insert Headers & Footers + HTML/CSS/JS snippets · Dark Mode · Back to Top button · Sticky Header · Sticky Footer Bar · Scroll Progress Bar · Smart Scroll · Scrollspy · Maintenance Mode · Coming Soon Mode · Announcement Bar · Floating CTA Button · CTA Pulse Animation · Winter Snow · Autumn Leaves · Falling Hearts · All 5 Content Protection tools · Full RTL support

**Pro unlocks:**
Site-Wide Animations (beta) · Scroll-Linked Effects (parallax, scrub) · Motion Import/Export · Scroll to Bottom button · Smooth Scrolling (Lenis) · Scrollbar Styler · Skeleton Loading Screen · Preloader · Spring Petals · Summer Bubbles · 14 additional seasonal & particle effects · Advanced seasonal scheduling and targeting · Sticky WhatsApp Button · Global Countdown Banner · Age Verification · Cookie Consent · GDPR Notice · Exit-Intent Popup · PHP code snippets · Conditional snippet display · Snippet scheduling

[See all Pro features →](https://wpxero.com/plugins/extenderx/pricing)

== Installation ==

1. In your WordPress admin, go to **Plugins → Add New**, search for **ExtenderX**, then click **Install Now** and **Activate**. Or upload the `extenderx` folder to `/wp-content/plugins/` manually.
2. After activation, open **ExtenderX** in the left admin menu.
3. Use the **Quick Start** screen to enable the modules you want: Site Enhancements, Block Editor extensions, and/or Custom Code.
4. Configure each module from the sidebar: **Site Enhancements** for site-wide tools, **Block Editor** for Gutenberg block extensions, **Custom Code** for header/footer scripts and snippets.
5. For block animations: edit any page or post, select a block, and open the **ExtenderX** panel in the right sidebar.

== Frequently Asked Questions ==

= What makes ExtenderX different from other animation plugins? =

Most animation plugins only animate their own blocks, or require you to switch to a different page builder. ExtenderX does two things others don't: it adds animations to every block you already use (any Gutenberg block, any plugin), and it bundles a full suite of site-wide tools — dark mode, sticky header, maintenance mode, seasonal effects, code snippets, marketing widgets — so you don't need a separate plugin for each. One dashboard, one plugin, conditional asset loading throughout.

= Does ExtenderX work with any WordPress theme? =

Yes. The Site Enhancements module (dark mode, sticky header, maintenance mode, seasonal effects, content protection, marketing tools, and more) works with any WordPress theme — classic or block themes. The Block Editor Extensions work within the Gutenberg editor and are compatible with any theme that supports the block editor.

= Does ExtenderX work with page builders like Elementor or Divi? =

The Site Enhancements tools (dark mode, sticky header, announcement bar, code snippets, seasonal effects, maintenance mode, and so on) work site-wide regardless of which builder or editor you use. The Block Editor Extensions are specific to the WordPress Gutenberg / block editor and do not add animation controls inside Elementor or Divi's own editors.

= How do I add scroll animations to Gutenberg blocks? =

Go to **ExtenderX → Block Editor** and make sure **Entrance Animation** is enabled. Then edit any page or post, select a block, and open the **ExtenderX** panel in the right sidebar. Choose a preset (fade in, slide up, zoom, flip, bounce, and more), set a duration and delay if you like, and publish. The animation fires once when the block scrolls into the visitor's viewport.

= What is the difference between entrance animations, floating animation, and tilt? =

Entrance animations fire once when a block scrolls into view. Floating animation is a continuous looping motion — useful for hero images or feature callouts. Tilt responds to the visitor's cursor position in real time. Only one motion type runs per block at a time.

= Does ExtenderX work with Kadence Blocks, Spectra, Stackable, and other third-party blocks? =

Yes. ExtenderX extends the Gutenberg editor globally, so every registered block — Kadence, Spectra, Stackable, Essential Blocks, Ultimate Blocks, Ghostkit, Greenshift, Otter Blocks, and all core WordPress blocks — automatically gets the ExtenderX sidebar panel with all six extensions.

= Will ExtenderX slow down my website? =

No. Every module uses conditional asset loading. Animation scripts only load on pages where at least one block uses an effect. Site enhancement scripts only load when their feature is enabled. Disabled features add zero CSS or JavaScript to any page.

= What is Site-Wide Animations and how is it different from block entrance animations? =

Site-Wide Animations (Pro, beta) lets you set a single reveal style — such as Flip Y — once from the dashboard, and it applies automatically to your content across every page without manually configuring each block. You can still override it per page or per block inside the editor. Block entrance animations, by contrast, are configured individually per block and give you precise control over each effect.

= How do I enable dark mode on my WordPress site? =

Go to **ExtenderX → Site Enhancements → Appearance** and toggle **Dark Mode** on. Visitors get a floating button to switch between light and dark. The engine is DarkReader and works with any theme.

= How do I put my WordPress site in maintenance mode? =

Go to **ExtenderX → Site Enhancements → Site Access Modes** and enable **Maintenance Mode**. Visitors see a maintenance screen; admins keep full access to the backend.

= How do I create a coming soon page? =

Enable **Coming Soon Mode** under **ExtenderX → Site Enhancements → Site Access Modes**. Visitors see a full-page coming-soon screen before launch; administrators keep full site access.

= How do I add Google Analytics or Google Tag Manager without editing theme files? =

Go to **ExtenderX → Custom Code**, click **Add Snippet**, paste your tracking code, choose **Header** (`<head>`), **Body Open** (after `<body>`), or **Footer** (before `</body>`) as the injection point, and save. Works for Google Analytics, Google Tag Manager, Meta Pixel, AdSense, and verification tags — no theme file edits needed.

= How do I add an announcement bar or notification bar? =

Enable **Announcement Bar** under **ExtenderX → Site Enhancements → Marketing**. Set your message, colors, position, and whether visitors can dismiss it.

= How do I add a sticky header to my WordPress site? =

Enable **Sticky Header** under **ExtenderX → Site Enhancements → Navigation & Scrolling**. Your existing header stays fixed at the top of the viewport as visitors scroll.

= How do I add a scroll progress bar? =

Enable **Scroll Progress Bar** under **ExtenderX → Site Enhancements → Navigation & Scrolling**.

= How do I add a back to top button to my WordPress site? =

Enable **Back to Top Button** under **ExtenderX → Site Enhancements → Navigation & Scrolling**. Pro adds a matching Scroll to Bottom button with the same style options; both can be active simultaneously.

= How do I add a falling snow or seasonal animation effect? =

Go to **ExtenderX → Site Enhancements → Seasonal Effects** and enable **Winter Snow**, **Autumn Leaves**, or **Falling Hearts** (all free). Pro unlocks Spring Petals, Summer Bubbles, Christmas Lights, Fireworks, Halloween Bats, Ramadan Lanterns, and more. All effects respect the visitor's "reduce motion" preference automatically.

= How does content protection work? =

Under **ExtenderX → Site Enhancements → Content Protection**, toggle any combination of: Disable Right Click, Disable Copy, Disable Inspect, Disable Image Drag, or Hide Admin Bar on Frontend. Each operates independently.

= Can I add a WhatsApp chat button to my site? =

Yes, with ExtenderX Pro. Enable **Sticky WhatsApp Button** under **Site Enhancements → Marketing**.

= Does ExtenderX include cookie consent and GDPR tools? =

Yes, with ExtenderX Pro. Enable **Cookie Consent** or **GDPR Notice** under **Site Enhancements → Site Access Modes**.

= Does ExtenderX support RTL languages? =

Yes. ExtenderX ships full RTL stylesheet support for Arabic, Hebrew, Persian, Urdu, and other right-to-left languages.

= How do I show or hide a block on mobile, tablet, or desktop? =

In the Block Editor, select a block, open the **ExtenderX** panel, and use **Visibility Control** to toggle visibility per device independently. Visibility is applied with CSS — no duplicate HTML content.

= How do I make an entire block clickable? =

Enable **Wrapper Link** in the ExtenderX panel for any block and enter a URL. The entire block becomes a clickable link on the frontend.

= How do I upgrade to ExtenderX Pro? =

Click **Upgrade to Pro** inside the ExtenderX dashboard, or visit [wpxero.com/plugins/extenderx/pricing](https://wpxero.com/plugins/extenderx/pricing).

== Screenshots ==

1. **Quick Start Dashboard** – Three-module overview: Site Enhancements, Gutenberg Block Extensions, and Custom Code, with at-a-glance active feature badges.
2. **Site Enhancements — Appearance** – Dark Mode, Skeleton Loading Screen, and Preloader toggles with per-feature settings.
3. **Site Enhancements — Navigation & Scrolling** – Back to Top, Scroll to Bottom (New), Sticky Header, Sticky Footer Bar, Scrollbar Styler, and Smooth Scrolling.
4. **Site Enhancements — Motion & Animations (Beta)** – Site-Wide Animations and Scroll-Linked Effects engines with Import/Export for your motion configuration.
5. **Site Enhancements — Seasonal Effects** – 18 site-wide effects grouped by Seasons, Holidays, Sales, and Ambient; Winter Snow, Autumn Leaves, and Falling Hearts are free.
6. **Site Enhancements — Content Protection** – Disable Right Click, Copy, Inspect, Image Drag, and Hide Admin Bar controls.
7. **Site Enhancements — Marketing** – Announcement Bar, Floating CTA Button, Sticky WhatsApp Button, CTA Pulse Animation, and Global Countdown Banner.
8. **Site Access Modes** – Maintenance Mode, Coming Soon Mode, Age Verification, Cookie Consent, GDPR Notice, and Exit-Intent Popup.
9. **Block Editor Extensions** – Six Gutenberg extensions (Entrance Animation, Floating Animation, Tilt, Visibility Control, Wrapper Link, Tooltip) with individual toggles.
10. **Custom Code Snippets** – Snippet table with type (HTML/CSS/JS), injection location, logic rules, and per-snippet active toggle.

== Changelog ==

= 1.8.1 – July 22, 2026 =
* New: "New" badge on the Scroll to Bottom Button card in the dashboard.
* Improved: Pro-only toggles (Scroll to Bottom, Skeleton Loader, Preloader, Scrollbar Styler, Smooth Scrolling, Scroll-Linked Effects, and the Seasonal Effects / Marketing / Site Access Modes cards) now link directly to the upgrade page when clicked, rather than appearing as non-interactive disabled controls.

= 1.8.0 – July 14, 2026 =
* New (Pro, Beta): Motion & Animations — Site-Wide Animations applies one reveal style across every page with block-type targeting, stagger delays, and per-page/per-block overrides in the editor. Scroll-Linked Effects adds parallax drift and scroll-progress scrub. Includes Import/Export for your motion configuration.
* New: Seasonal Effects — 18 site-wide effects across Seasons, Holidays, Sales, and Ambient groups. Winter Snow, Autumn Leaves, and Falling Hearts are free; 15 additional effects are Pro.
* New (Pro): Advanced seasonal controls — schedule effects by date range, target specific pages, and customize colors per effect.
* New (Pro): Scroll to Bottom button with the same style presets, icon options, positions, and visibility targeting as Back to Top. Both buttons stack neatly when active simultaneously.
* New (Pro): Custom Code power-ups — PHP snippets, conditional display logic, and snippet scheduling.
* Improved: All seasonal effects automatically honor visitors' "prefers-reduced-motion" system preference.
* Improved: Code snippets now use a dedicated database table for faster, more reliable storage. Existing snippets migrate automatically.
* Improved: Back to Top settings panel now controls both scroll buttons to keep options in sync.
* Performance: Settings storage split per module; no longer autoloads on every page request, reducing memory use site-wide.

= 1.7.1 – June 21, 2026 =
* Improved: Expanded plugin listing to make free site tools easier to discover.
* Added: New FAQ entries for seasonal effects, maintenance mode, coming soon pages, announcement bars, and adding tracking scripts without editing theme files.
* Fixed: Corrected free vs. Pro feature split — Smart Scroll and three seasonal effects are free; Smooth Scrolling (Lenis) is Pro.

= 1.7.0 – June 20, 2026 =
* New: Insert Headers & Footers + Custom Code Snippets — manage HTML, CSS, and JavaScript snippets with per-snippet toggles.
* New: Site Access Modes — Maintenance Mode, Coming Soon Mode, Age Verification (Pro), Cookie Consent (Pro), GDPR Notice (Pro), Exit-Intent Popup (Pro).
* New: Redesigned card-based admin dashboard.
* Improved: Settings batch-save on rapid toggles with a clean non-duplicating notice.
* Improved: Consistent notification styling across all dashboard screens.
* Improved: License status reflected in the Upgrade button — Pro users see "Pro Active" badge.
* Improved: ARIA labels on feature toggles and current-page indicator in sidebar navigation.
* Performance: Removed unused code from the settings dashboard.

= 1.6.6 – June 06, 2026 =
* Improved: Animation-first plugin listing for better discoverability on WordPress.org.
* Added: Quick Start checklist and editor deep-link in the dashboard.
* Added: Review prompt and one-time block editor onboarding notice for new users.
* Added: Documentation hub with block-library compatibility guides.
* Removed: Scroll Effects "Coming Soon" placeholder — use Entrance Animations instead.

= 1.6.5 – May 11, 2026 =
* Improved: Floating animations block wrapper and editor panel.
* Improved: Toggle control visuals and reset button styling in block extension panels.
* Improved: Tooltip rendering behavior and shared extension helpers.

= 1.6.4 – April 11, 2026 =
* Improved: Compatibility with the latest WordPress and PHP versions.
* Fixed: Several features not functioning correctly in certain environments.

= 1.6.3 – April 08, 2026 =
* Improved: Memory management and server resource optimization.
* Improved: Settings page interface redesign.

= 1.6.2 – February 24, 2026 =
* Fixed: Sticky Header and Sticky Footer not working correctly on certain themes.
* Fixed: Gradient color rendering in the Scrollbar Styler and Scroll Progress Bar.
* Fixed: Hide Admin Bar on Frontend not applying for logged-in users.

= 1.6.1 – February 22, 2026 =
* Improved: Dark mode admin dashboard styling.
* Improved: Dark mode shortcode output and color settings.
* Improved: Top center and bottom center positions for the Back to Top button.
* Improved: Color settings for sticky header and footer.
* Fixed: Scrollbar Styler rendering issues.

= 1.6.0 – February 17, 2026 =
* Added: Back to Top button.
* Added: Sticky Header — navigation fixed at the top on scroll.
* Added: Sticky Footer Bar — persistent footer strip.
* Added: Smooth Scrolling (Pro) — Lenis-powered page scrolling.
* Added: Scrollspy — active nav highlighting based on scroll position.
* Added: Scroll Progress Bar — reading progress indicator.

= 1.5.2 – February 09, 2026 =
* Fixed: Compatibility with WordPress 6.9.
* Improved: Performance, stability, and frontend dark mode support.

= 1.5.1 – January 23, 2026 =
* Added: Freemius SDK integration.

= 1.5.0 – January 23, 2026 =
* Added: Dark Mode for the frontend.
* Added: Disable Right Click, Disable Copy, Disable Inspect, Disable Image Drag.
* Added: Hide Admin Bar on Frontend.
* Improved: Centralized ExtenderX dashboard introduced.

= 1.4.5 – December 12, 2025 =
* Improved: WordPress 6.9 compatibility.

= 1.4.4 – November 11, 2025 =
* Improved: Performance and reliability enhancements.

= 1.4.3 – September 19, 2025 =
* Fixed: Compatibility with WordPress 6.8.2.
* Fixed: Floating animation preview rendering in the block editor.
* Fixed: Tilt animation preview rendering in the block editor.

= 1.4.2 – August 17, 2025 =
* Added: New entrance animation presets.
* Improved: Animation script loading times.
* Fixed: Compatibility with WordPress 6.8.2.
* Fixed: Animations not triggering on certain themes.

= 1.4.1 – July 10, 2025 =
* Improved: Tooltip styling, positioning, and asset optimization.
* Fixed: Compatibility with WordPress 6.8.1.
* Fixed: Tooltips not displaying correctly on some third-party blocks.

= 1.4.0 – May 20, 2025 =
* Added: Tooltip extension for Gutenberg blocks.

= 1.3.6 – May 01, 2025 =
* Fixed: Compatibility with WordPress 6.8.1.

= 1.3.5 – March 04, 2025 =
* Added: Pro license activation flow.

= 1.3.4 – February 17, 2025 =
* Improved: General performance and code optimizations.

= 1.3.3 – December 21, 2024 =
* Fixed: Minor bugs and stability improvements.

= 1.3.2 – December 21, 2024 =
* Improved: System optimizations for overall functionality.

= 1.3.1 – November 29, 2024 =
* Fixed: Full compatibility with WordPress 6.7.1.

= 1.3.0 – November 01, 2024 =
* Added: Wrapper Link — make any block fully clickable with a custom URL.
* Fixed: Compatibility with WordPress 6.7.

= 1.2.0 – October 18, 2024 =
* Added: Floating Animations.
* Fixed: Compatibility with Essential Blocks, Ultimate Blocks, and Kadence Blocks.

= 1.1.3 – October 10, 2024 =
* Fixed: Compatibility with Ghostkit and Otter Blocks.

= 1.1.2 – October 08, 2024 =
* Fixed: Compatibility with Spectra and GutenKit.

= 1.1.1 – October 04, 2024 =
* Added: Easing control for entrance animations.
* Added: Value reset for tilt animation settings.
* Improved: Block extension controls UI.

= 1.1.0 – October 03, 2024 =
* Added: Entrance Animations — scroll-triggered block animations on viewport entry.

= 1.0.0 – October 02, 2024 =
* Initial release.

== Upgrade Notice ==

= 1.8.0 =
Major release: 18 seasonal effects, Motion & Animations with site-wide reveal and scroll-linked parallax (Pro, beta), Scroll to Bottom button (Pro), PHP snippets with conditional logic and scheduling (Pro), faster snippet storage, lighter settings loading. Recommended for all users.

= 1.7.0 =
Major free release: Insert Headers & Footers, HTML/CSS/JS snippets, Site Access Modes (maintenance, coming soon, GDPR, and more), redesigned dashboard. Recommended for all users.

= 1.6.6 =
Listing update, Quick Start checklist, documentation hub. Recommended for all sites.

= 1.6.5 =
Floating animations and block extension UI improvements.

== License & Disclaimer ==

This plugin is licensed under GPL v2 or later. No warranties are provided. You are free to modify and distribute it under the same license.