PeachDrawing.Text
PeachDrawing.Text.Layout.ParagraphStyle
ParagraphStyle.Ellipsis Property
What a line that is cut, by MaxLines or TextOverflow, ends with, up to 32 UTF-16 units: null for the ellipsis (U+2026, or three full stops where the face has no such character), and the empty string for nothing at all, so that the line is only cut.
public string? Ellipsis { get; init; }