grouping staffs

[Helge Kruse]

Hello,

I want to write a score for three instruments. One instrument has one staff, 
the two other have two staves. I found in the documentation at 6.4.7 some 
system start delimiter for combination of single staff lines. How do I 
combine second to third and fourth to fifth staff?

So it look like this (fixed font pseudo graphic).

   |---|---|---
   |---|---|---
   |---|---|---
   |
 / |
 | |---|---|---
 | |---|---|---
 | |---|---|---
 | |   |   |
 | |---|---|---
 | |---|---|---
 | |---|---|---
 \ |
   |
 / |
 | |---|---|---
 | |---|---|---
 | |---|---|---
 | |   |   |
 | |---|---|---
 | |---|---|---
 | |---|---|---
 \ |

/Helge