You can delete annotations on the page without deleting pen or highlight by setting an option.
To set an option, press the eraser icon while the eraser tool is enabled.
- Pen: If you enable this option, you can erase your handwriting using a pen. If you disable the option, pen objects will not be deleted if you erase them with the eraser tool or delete the entire page.
- Highlight: If you enable this option, you can erase your handwriting using a highlight. If you disable the option, highlight objects will not be deleted if you erase them with the eraser tool or delete the entire page.