Sourcecode
The button "Source" in the toolbar of the HTML editor changes between the HTML source of the text and the standard editing mode ("wysiwyg" - "What you see is what you get").
The source code of the text can be edited directly.
Note: Only experts in HTML should edit the source code, because errors in the source code can have unwanted and unexpected side effects. Furthermore SABIO will not be able to provide support for errors or questions occurring through editing of the source code.