The element in the host page's document that contains the editor content.
If the fixed editor UI is used, then it will be set to
editor.ui.space( 'contents' )
— i.e. the <div>
which contains the editor <iframe>
(in case of classic editor)
or CKEDITOR.editable (in case of inline editor). Otherwise it is set to the CKEDITOR.editable itself.
Use the position of this element if you need to position elements placed in the host page's document relatively to the
editor content.
var editor = CKEDITOR.instances.editor1;
console.log( editor.ui.contentsElement.getName() ); // 'div'