-To fine-tune the position and size of the markup, the number preceding
-@code{setgray} in the postscript definition can be set to a value less
-than one, making it grey. The two numbers before @code{scale} in the
-postscript code are responsible for the width and height of the
-rectangle, the two numbers before @code{translate} change the x- and
-y-origin of the rectangle.
+The markup command @code{with-dimensions} tells LilyPond to consider
+only the bottom edge of the rectangle when spacing it against the
+hairpin. The property @code{staff-padding} prevents the rectangle from
+fitting between the hairpin and staff.