Draw on a ChordPro chart to mark repeats or other info. The drawings are saved with the song.
Tap Draw among the floating action buttons. The drawing bar offers:
Save... asks New Version or Save Changes. Save Changes stores the drawing on this chart. New Version keeps the original song and stores the drawing on a new song version.
A song with drawings can be found with the filter Has Drawings. When you share a PDF, the drawings stay on the page unless you turn on Remove drawings.