This sample shows how to configure CKEditor instances to use the Placeholder plugin that lets you insert read-only elements into your content. To enter and modify read-only text, use the Create Placeholder button and its matching dialog window.
		To add a CKEditor instance that uses the placeholder plugin and a related
		Create Placeholder toolbar button, insert the following JavaScript
		call to your code:
	
CKEDITOR.replace( 'textarea_id',
	{
		extraPlugins : 'placeholder',
		toolbar : [ [ 'Source', 'Bold' ], ['CreatePlaceholder'] ]
	});
	
		Note that textarea_id in the code above is the id attribute of
		the <textarea> element to be replaced with CKEditor.