# Documenter breaks vertical line (vertical bracket) in Latex mode

**URL:** <https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777>\
**Category:** Teaching & Outreach\
**Tags:** bug\
**Created:** [November 24, 2022, 8:19pm UTC](https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777 "2022-11-24T20:19:59Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Tomas\_Pevny](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tomas_pevny/32/25466_2.png) [@Tomas\_Pevny](https://discourse.julialang.org/u/Tomas_Pevny)\
**Post date:** [November 24, 2022, 8:19pm UTC](https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777/1 "2022-11-24T20:19:59Z")

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Hi,

I am revising my lecture on automatic differentiation and I have noticed that Documenter has started to break vertical line that I insert as

```julia
``J_i = \left.\frac{f_i}{\partial y_i}\right|_{y_i^0} `` 

```

![Screenshot 2022-11-24 at 21.16.39](https://global.discourse-cdn.com/julialang/original/3X/6/8/68d24946c2f4fe9c3d28550f0c32fe6c83611767.png)

Does any has an idea, what am I doing wrong or how can I fix this? In latex, I was always type it this way.

Thanks for help in advance.  
Tomas

```julia
  [e30172f5] Documenter v0.27.23
  [35a29f4d] DocumenterTools v0.1.16

```

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<div class="post-metadata">

**Author:** ![cmichelenstrofer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cmichelenstrofer/32/44392_2.png) [@cmichelenstrofer](https://discourse.julialang.org/u/cmichelenstrofer)\
**Post date:** [November 30, 2022, 1:46am UTC](https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777/2 "2022-11-30T01:46:10Z")

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I just tried it, and it looks fine. Maybe it is your browser or font?

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<div class="post-metadata">

**Author:** ![cmichelenstrofer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cmichelenstrofer/32/44392_2.png) [@cmichelenstrofer](https://discourse.julialang.org/u/cmichelenstrofer)\
**Post date:** [November 30, 2022, 1:48am UTC](https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777/3 "2022-11-30T01:48:16Z")

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Also, you can use Unicode characters in Documenter! This works for me too

```julia
``Jᵢ = \left.\frac{fᵢ}{∂yᵢ}\right|_{y_i^0} ``

```

Sorry I know it’s unrelated but I think it is so cool. 🙂

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<div class="post-metadata">

**Author:** ![Tomas\_Pevny](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tomas_pevny/32/25466_2.png) [@Tomas\_Pevny](https://discourse.julialang.org/u/Tomas_Pevny)\
**Post date:** [November 30, 2022, 9:12am UTC](https://discourse.julialang.org/t/documenter-breaks-vertical-line-vertical-bracket-in-latex-mode/90777/4 "2022-11-30T09:12:56Z")

</div>

Oh that might be a reason, I will check that.