Problems with Individual Parts

[Fabio dos Santos]

Hi Guys,

I'm trying to write a ViolinI part which has a solo on a separate staff.

My problem is that when there are no extra staffs, Lilypond adds a
bar-line to the beginning of that staff System. Which grob do I need to
tune so that these bar-lines don't appear when I only have staff/system?

ADVthanksANCE 
Fabio.
-- 
Fabio dos Santos <address@hidden>