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## Re: Vertical space for imaginary, real collisions

 From: Graham Percival Subject: Re: Vertical space for imaginary, real collisions Date: Wed, 25 Oct 2006 15:35:49 -0700 User-agent: Thunderbird 1.5.0.7 (Macintosh/20060909)

I believe you are mistaken. The space that lilypond creates in the first line is appropriate; if the text occurred beneath the sixteenth notes, any less space would result in a collision. LilyPond calculates this space based on drawing a box around the whole system.
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In the second line, there is no collision. If you zoom in, you can see a space.
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Cheers,
- Graham

Marcus Macauley wrote:
```
Sometimes Lilypond creates vertical space between staves to avoid a collision between, for example, a text markup in one staff and a beam in the other staff, when these two things happen in different measures and wouldn't actually collide.
```
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On the other hand, in cases where they do collide and hence the vertical space is necessary, sometimes it isn't quite enough.
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This file demonstrates both cases:

\version "2.9.22"
<<
```
\new Staff \relative a' { a4 a a a << {a a a a} \\ {a,8 a a a a a a a} >> \break
```    \repeat unfold 3 { a'4 a a a << {a a a a} \\ {a,8 a a a a a a a} >> }
}
\new Staff \relative a' {
a1^\markup {
\column {
\line {This text wouldn't collide w/ the beam,}
\line {so less vertical space is needed.}
}}
a \break
a^\markup {
\column {
\line {This text does collide with the beam,}
\line {so more vertical space is needed.}
}}
a a a a a
```
}
```
```
```\layout {  }

Marcus

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