relative NonMusicalPaperColumn.line-break-system-details offsets?

[Kieren MacMillan]

Hi all,

The title says it all, really: I sometimes resort to using 
NonMusicalPaperColumn.line-break-system-details to tweak the placement (usually 
Y-offset) of certain systems or staves within systems. 

But currently, all values must be given as an absolute distance from the top 
[or left] of the printing area. This results in a great deal of 
trial-and-error, and given the fact that recompile times are large for many of 
the [sizeable] scores I’m engraving, my productivity is definitely reduced when 
I hit that point in the process. Furthermore, if I’ve made a relative 
adjustment, and (e.g.) the layout of a system above changes, a relative 
adjustment from where Lily *thinks* the system should be is almost certainly 
still closer to “the truth” than an absolute setting.

Is there a way to allow NonMusicalPaperColumn.line-break-system-details 
Y-offset to be set in relative terms (like \offset does with many properties)?

Thanks,
Kieren.

________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: address@hidden