Next to the above button, a read-only text field permanently shows a short description of current clipboard content:
an element name if a single element has been copied or cut to the clipboard,
OR #text for a text node or for a sequence of characters,
OR #comment for a comment node.
OR #processing-instruction for a processing instruction node,
OR the number of nodes (between square brackets) if more than one node have been copied or cut to the clipboard . Example "[5]" if the five list items of this itemized list have been copied to the clipboard.