When you create reference links, underline or highlight text using gestures, or insert text or image, the icon will appear on the side of them.
You can hide those icons by setting an option.
You can see the option from the Document View Options by pressing the icon (iOS: / Android:
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- Reference Link: You can show/hide icons on the side of the Reference Links by enabling/disabling the option.
- Annotation Marker: You can show/hide icons next to the underlines, highlights, images, and text boxes.