There are some things in lilypond that I just think are not explained anywhere. What is this springs-and-rods business? For Hairpins, I read this?
minimum-length (dimension, in staff space): 2.0 Try to make a spanner at least this long, normally in the horizontal direction. This requires an appropriate callback for the springs-and-rods property. If added to a Tie, this sets the minimum distance between noteheads. And: springs-and-rods (boolean): ly:spanner::set-spacing-rods Dummy variable for triggering spacing routines. With all due respect to our fantastic developers, I find this unintelligible and less than helpful. What is springs-and-rods supposed to be set to: ly:spanner::set-spacing-rods, or ##t, or ##f and when, and why? What exactly is meant by 'dummy' in this context? I use that word to mean a temporary placeholder, but there are many usages. WHat is 'an appropriate callback'? No example is provided. If I had any idea at all about this I would write a small section in the NR on it and submit it, but I am stumped. if this _is_ in the NR, please let me know. Andrew
