### Testing Copying selected table cells: 1. Select a fragment of table cell. 2. Use copy shortcut ctrl+C. 3. Paste selected content: - somewhere in the document. - in the editable field on the right. 4. The pasted table should: - be rectangular (no missing nor exceeding table cells) - have proper headings 5. The editors are exposed as: - `window.editor.content` and "content" editor in CKEditor inspector - `window.editor.geometry` and "geometry" editor in CKEditor inspector Note that table copy: - have cut disabled - paste in table is not possible - pasted table can be fixed by a post-fixer (use content editable to verify what's being copied)