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#260 (page 7) compares PdfCraft with Acrobat, which draws an Ink annotation's /InkList as a smooth curve through the points; pdfcraft-annot drew straight segments between them (as MuPDF, Poppler and PDFium do). A stroke of three or more points is now drawn as a Catmull-Rom spline through every point, written as cubic Béziers: the curve leaves each point parallel to the chord between its neighbours, and an end uses itself as the missing neighbour. Two points stay a line and one point a dot. This is the appearance PdfCraft writes for its own ink, signatures drawn with Fill & Sign included, and, with the display-only appearances for comments that have none, how ink without /AP is shown. A curve can swing beyond its points, so a new ink annotation's /Rect now also covers the curve's control points (the curve stays within them); before, only the points plus the line-width margin. Test: annot tests::ink_strokes_are_smooth_curves_through_their_points checks the exact curve for a three-point stroke, a line for two points, a dot for one, and a /Rect that holds a stroke whose curve rises above its highest point (22 on main, 23.667 now). The comment.pencil parity entry cites it. Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> Co-authored-by: Brandon Thomas <echelon@gmail.com>