Stave spacing

[Helge Kruse]

Hello,


I notate a piece with four staves. Two dynamic lines are inserted
between staff 1+2 and 3+4 like show in 
http://lsr.dsi.unimi.it/LSR/Item?id=357. While the layout looks 
reasonable on most pages I have a lot of empty spave between the systems 
on page three and four. (http://www.dj1na.gmxhome.de/score/LR3.ly)

I tried to increase the minimum-Y-extent of VerticalAxisGroup in the 
layout block. But since the dynamic lines are added to the staff goup 
similar to a staff, this increases the distance at the other pages too.

What I need is something like an invisible dynamics in the appropriate 
measures. But I would like to remove the huge spaces between the systems 
in a more elegant way. Do you have any hint?

I fiddled around with between-system-space and between-system-padding in 
the \page section the layout does not get more space between the staves. 
Lilyponds only prints:
warning: Can't fit systems on page -- ignoring between-system-padding
when I use larger values.


Regards,
Helge