I was curious and went looking and found these: * https://lilypond.org/doc/v2.23/Documentation/essay/engraving-details#optical-spacing https://lilypond.org/doc

I was curious and went looking and found these: * https://lilypond.org/doc/v2.23/Documentation/essay/engraving-details#optical-spacing https://lilypond.org/doc/v2.23/Documentation/essay/engraving... * https://lilypond.org/doc/v2.25/Documentation/snippets/expressive-marks-_002d-asymmetric-slurs https://lilypond.org/doc/v2.25/Documentation/snippets/expres... The documentation shows a number of configuration directives to control the display and confer semantics generally with the aim of improving readability.