Add support page

docs/index.md

@@ -9,7 +9,7 @@ meta-description: Learn how to install, integrate, configure and develop CKEdito
 # CKEditor 4 Documentation
 
 <info-box warning>
-	<strong>CKEditor 4 reached its End of Life (EOL) in June 2023</strong>. From then on, it will receive no more updates, new features, bug fixes, and most importantly, security patches.
+	<strong>CKEditor 4 reached its End of Life (EOL) in June 2023</strong>. From then on, it will receive no more updates, new features, bug fixes, and most importantly &ndash; no security patches.
 
 	Please refer to the [Migration from CKEditor 4](https://ckeditor.com/docs/ckeditor5/latest/updating/ckeditor4/migration-from-ckeditor-4.html) guide to learn what steps you should take to switch to CKEditor 5.
 

docs/support/extended-support-model.md

@@ -0,0 +1,32 @@
+---
+category: licensing
+order: 10
+menu-title: Extended Support Model
+meta-title: CKEditor 4 Extended Support model
+---
+
+# Extended Support Model
+
+## Commercial support
+
+CKEditor 4 was launched in 2012 and reached its End of Life (EOL) on June 30, 2023.
+
+A special edition, **[CKEditor 4 LTS](https://ckeditor.com/ckeditor-4-support/)** ("Long Term Support"), is available under commercial terms (["Extended Support Model"](https://ckeditor.com/ckeditor-4-support/)) for anyone looking to **extend the coverage of security updates and critical bug fixes**.
+
+This limited-time-only package guarantees that your editor remains secure, with uninterrupted access to all functionality until December 2026.
+
+* Security Vulnerability Assurance (standard inclusion)
+
+Ensures security fixes are provided for any CKEditor 4 bugs which threaten the security of your application.
+
+* Third-party API Changes Assurance (optional extra)
+
+CKSource resolves any critical/high-severity issues in CKEditor 4 caused by changes in third-party apps (e.g. browser, MS Word) that CKEditor 4 depends on for its functionality (time limitations apply).
+
+* Standard Support (optional extra)
+
+Access the CKSource Customer Support team for ongoing support requests as per your standard contract terms.
+
+## Purchasing a license
+
+If you wish to purchase a commercial CKEditor 4 LTS license, [contact us](https://ckeditor.com/contact/?sales=true#contact-form) to receive an offer tailored to your needs.

docs/support/index.md

@@ -0,0 +1,31 @@
+---
+category: support
+order: 10
+toc: false
+meta-title: CKEditor 4 support documentation
+meta-description: Learn how to get help and support
+---
+
+# Getting support
+
+The following article contains tips about the resources that you can refer to when you need some help with CKEditor 4.
+
+## Extended Support Model
+
+**CKEditor 4 reached its End of Life (EOL) in June 2023**. From then on, it will receive no more updates, new features, bug fixes, and most importantly, security patches.
+
+Please refer to the [Migration from CKEditor 4](https://ckeditor.com/docs/ckeditor5/latest/updating/ckeditor4/migration-from-ckeditor-4.html) guide to learn what steps you should take to switch to CKEditor 5.
+
+If you have an active CKEditor 4 subscription and need help, you can contact [our support team](https://ckeditor.com/contact/). If you are not ready to migrate yet, for a limited time we are offering a paid [Extended Support Model](https://ckeditor.com/ckeditor-4-support/) that will protect you against security vulnerabilities and/or breaking third-party API changes.
+
+## Commercial support
+
+If you have an active commercial license, like Extended Support Model, please [contact us directly](https://ckeditor.com/contact/).
+
+## Documentation
+
+CKEditor 4 comes with really extensive {@link guide/index documentation} that you should read and {@linkexample index plenty of samples} that you can try out and even download to copy and implement in your own environment.
+
+## Stack Overflow
+
+The ["ckeditor"](http://stackoverflow.com/questions/tagged/ckeditor) and ["ckeditor4.x"](http://stackoverflow.com/questions/tagged/ckeditor4.x) tags at Stack Overflow are where CKEditor developers and integrators can share their problems and solutions. CKEditor 4 has grown as an Open Source product, thanks to the amazing community of developers and users. The `ckeditor` and `ckeditor4.x` tags at Stack Overflow work in an Open Source way, too, so you are encouraged to not only ask questions but also answer them and help fellow developers. It will be much appreciated!

docs/support/license-and-legal.md

@@ -0,0 +1,35 @@
+---
+category: licensing
+order: 20
+menu-title: License and legal
+---
+
+# License and legal
+
+The following legal notices apply to CKEditor 4 and all software from CKEditor 5 Ecosystem included with it.
+
+Copyright (c) 2003-2023, CKSource Holding sp. z o.o. All rights reserved.
+
+## Software License Agreement for CKEditor 4 LTS (4.23.0 and above)
+
+CKEditor 4 LTS ("Long Term Support") is available under exclusive terms of the [Extended Support Model](https://ckeditor.com/ckeditor-4-support/). [Contact us](https://ckeditor.com/contact/) to obtain a commercial license.
+
+## Free for Open Source (CKEditor 4.22.* and below)
+
+Licensed under the terms of any of the following licenses at your choice:
+
+* GNU General Public License Version 2 or later (the "GPL") https://www.gnu.org/licenses/gpl.html (See Appendix A)
+
+* GNU Lesser General Public License Version 2.1 or later (the "LGPL") https://www.gnu.org/licenses/lgpl.html (See Appendix B)
+
+* Mozilla Public License Version 1.1 or later (the "MPL") https://www.mozilla.org/MPL/MPL-1.1.html (See Appendix C)
+
+You are not required to, but if you want to explicitly declare the license you have chosen to be bound to when using, reproducing, modifying, and distributing this software, just include a text file titled "legal.txt" in your version of this software, indicating your license choice. In any case, your choice will not restrict any recipient of your version of this software to use, reproduce, modify, and distribute this software under any of the above licenses.
+
+## Sources of intellectual property included in CKEditor
+
+Where not otherwise indicated, all CKEditor 4 content is authored by CKSource engineers and consists of CKSource-owned intellectual property. In some specific instances, CKEditor will incorporate work done by developers outside of CKSource with their express permission.
+
+## Trademarks
+
+CKEditor is a trademark of [CKSource Holding sp. z o.o.](http://cksource.com/) All other brand and product names are trademarks, registered trademarks, or service marks of their respective holders.

docs/support/license-key-and-activation.md

@@ -0,0 +1,46 @@
+---
+category: licensing
+order: 30
+menu-title: License key and activation
+---
+
+# License key and activation
+
+This article explains how to activate a license of CKEditor 4 LTS ("Long Term Support") under commercial terms (["Extended Support Model"](https://ckeditor.com/ckeditor-4-support/)).
+
+## Purchasing a commercial license
+
+To activate CKEditor 4 LTS ("Long Term Support"), you will need a paid [Extended Support Model](https://ckeditor.com/ckeditor-4-support/) that will protect you against security vulnerabilities and/or breaking third-party API changes.
+
+If you wish to purchase a commercial CKEditor 4 LTS license, [contact us](https://ckeditor.com/contact/?sales=true#contact-form) to receive an offer tailored to your needs.
+
+## Obtaining a license key
+
+Follow this guide to get the license key necessary to activate the CKEditor 4 LTS ("Long Term Support") version, guaranteeing that your editor remains secure.
+
+### Log in to the CKEditor Ecosystem dashboard
+
+Log in to the [CKEditor Ecosystem dashboard](https://dashboard.ckeditor.com). If this is the very first time you do it, you will receive a confirmation email and will be asked to create a password for your account. Keep it safe.
+
+### Access the account dashboard
+
+After logging in, click "CKEditor" under the "Your products" header on the left. You will see the overview of the subscription parameters together with the management area below.
+
+{@img assets/img/ckeditor-dashboard.png 832 Your CKEditor subscriptions in the customer dashboard.}
+
+### Copy the license key
+
+After clicking "Manage", you can access the license key needed to run the editor under the LTS version.
+
+{@img assets/img/ckeditor-key.png 797 License key in the management console.}
+
+## Activating the product
+
+You need to add the license key to your CKEditor 4 configuration.
+
+```js
+CKEDITOR.replace( 'editor', {
+    // Provide the activation key.
+    licenseKey: 'your-license-key',
+} );
+```

umberto.json

@@ -446,6 +446,20 @@
 			}
 		]
 	},
+	{
+		"name": "Support",
+		"id": "support",
+		"navigationIncludeIndex": true,
+		"slug": "support",
+		"categories": [
+			{
+				"name": "Licensing and activation",
+				"id": "licensing",
+				"slug": "licensing",
+				"order": 20
+			}
+		]
+	},
 	{
 		"name": "API",
 		"id": "api-reference",