> On 23 Sep 2022, at 19:30, Volodymyr Prokopyuk <[email protected]> 
> wrote:
> 
> Hello,
> 
> How to create a double dashed bar across the PianoStaff in the middle of a 
> measure to indicate Fine?
> 
> I can successfully create the following bars across the PianoStaff
> 
> Double solid bar with \bar "||"
> Single dashed bar with \bar "!"
> I've tried with no success \bar "!!" and some variations of \defineBarLine to 
> create a double dashed bar across the PianoStaff in the middle of a measure 
> to indicate Fine. Could you, please, help me?
> 
> I'm using lilypond v2.23.11.
> 
> Thank you very much in advance! Vlad
> 
If I understand it correctly 

\defineBarLine "!!" #'("!!" "!!" "!!")

\new StaffGroup <<
  \new Staff \relative c'' {
    c1
    c2 \bar "!!" c2
    c1
  }
  \new Staff \relative c'' {
    c1
    c1
    c1
  }
>>

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