HTML field type The HTML editor provides WYSIWYG (what you see is what you get) functionality and HTML source mode editing. Administrators can customize some of the functionality associated with HTML fields. The HTML editors available depend on your version of the UI.Table 1. UI support for available HTML editors HTML editor UI support TinyMCE version 4 UI16, UI15 htmlArea (legacy) Basic support in UI16 Knowledge articles, service catalog item descriptions, release documentation, and HTML content blocks are common examples of HTML fields. While HTML fields can be added to split forms, HTML fields are not intended for this use and can behave unexpectedly due to the limited available width in split pane forms. Configure a field editor for the HTML fieldYou can configure HTML fields to use the TinyMCE editor or the legacy HtmlArea editor. This editor provides better stability and more editing functions than the legacy htmlArea editor.Editing functions in the TinyMCE editorSeveral editing functions are built into the TinyMCE editor.