Watermark
Select a note and check Watermark in the sidebar. The preview rotates 45 degrees; exported text is placed behind the drawing. X and Y locate the watermark’s center.
Watermarks start gray. Use the toolbar swatch or a #RRGGBB value to change the color. Clearing Watermark removes the rotation and preserves the font and color.
QR code and Watermark are alternative renderings of the same note.