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@@ -83,6 +83,10 @@ A board in OpenProject is a view that allows you to see your work packages as ca
 
 ## C
 
+### CAPTCHA
+
+A CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) is a security mechanism used on websites to determine whether the user is a human or a bot. OpenProject offers [reCAPTCHA](../system-admin-guide/authentication/recaptcha/) and [Cloudflare Turnstile](../system-admin-guide/authentication/recaptcha/#cloudflare-turnstile-configuration) that system administrators can configure for their instance.
+
 ### Classic project management
 
 Classic project management is a structured and sequential approach to project management. It often follows a hierarchical structure with a project manager overseeing team coordination, and is associated with methodologies like Waterfall. OpenProject supports classic project management as well as [agile project management](#agile-project-management), and works best for [hybrid project management](#hybrid-project-management).
@@ -456,3 +460,7 @@ Work package types are the different items a work package can represent. Each wo
 ### Work package view
 
 A list of work packages is considered a view. The containing work packages in any view can be displayed a number of different ways. Examples for most used work package views are the [table view](#work-package-table), the full screen view or the split screen view. You can also display work packages  in a card view and use them in a [board](#board) to use agile methods. [Read more about work package views in OpenProject](../user-guide/work-packages/work-package-views/#work-packages-views).
+
+### WYSIWYG editor
+
+WYSIWYG stands for 'What you see is what you got'. A WYSIWYG editor is a content editing interface that allows users to create and edit content so that it visually resembles the final result. In OpenProject, you can use WYSIWYG editors in [wikis](#wiki), [forums](#forum) and [work package](#work-package) descriptions and comments.
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