WRT the flexible vertical spacing dimensions, the upper attachment points for 'space and 'minimum-distance currently align with the Y-coordinate of the origin (0,0) of the upper item. For systems this is the middle line of the nearest staff, and for markups this is the highest point of the markup. In the newest docs (NR 4.1.2 as of yesterday), these are called "reference points".
I think that most of the resulting dimensions are what the user would naturally expect them to be, except when the upper item is a title/markup. In these cases, I think the most natural attachment point would be the *bottom* of the upper markup. This applies to 3 of the 8 flexible vertical dimensions: * after-title-spacing * between-title-spacing * bottom-system-spacing The proposed change to after-title-spacing needs no comment. For between-title-spacing however, I should mention that if the upper attachment point (of 'space and 'minimum-distance) is moved to the bottom of the upper markup, then the 'padding value is basically rendered redundant. In that case, 'padding would only influence the spacing if it were larger than 'minimum-distance, and making 'padding larger than 'minimum-distance is generally pointless since that in turn would render 'minimum-distance redundant. That being said, I don't think this is a problem; the spacing behavior would still be more natural IMO. And a simple explanation for this unique case could be added to the docs. Of the three, bottom-system-spacing is slightly more complicated, since it currently controls the spacing below systems *and* markups, when either is the last on a page. So the natural attachment point for systems would remain the same, but would be shifted to the lowest Y-coordinate for markups (ideally). Personally, I think we should add a new variable to control the spacing between a markup and the bottom margin. We could call it bottom-markup-spacing for now, but see this post for my proposed variable renaming: http://lists.gnu.org/archive/html/lilypond-devel/2010-10/msg00070.html Let me know what you guys think; it would be nice to achieve consensus on this one. Thanks. - Mark _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-devel
