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``` git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash ``` Closes #11925
264 lines
14 KiB
Markdown
264 lines
14 KiB
Markdown
---
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title: Diagrams
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description: Use fenced code blocks and markdown render hooks to display diagrams.
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categories: [content management]
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keywords: [diagrams,drawing]
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menu:
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docs:
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parent: content-management
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weight: 50
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weight: 50
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toc: true
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---
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{{< new-in 0.93.0 >}}
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## GoAT diagrams (ASCII)
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Hugo supports [GoAT](https://github.com/bep/goat) natively. This means that this code block:
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````txt
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```goat
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. . . .--- 1 .-- 1 / 1
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/ \ | | .---+ .-+ +
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/ \ .---+---. .--+--. | '--- 2 | '-- 2 / \ 2
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+ + | | | | ---+ ---+ +
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/ \ / \ .-+-. .-+-. .+. .+. | .--- 3 | .-- 3 \ / 3
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/ \ / \ | | | | | | | | '---+ '-+ +
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1 2 3 4 1 2 3 4 1 2 3 4 '--- 4 '-- 4 \ 4
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```
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````
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Will be rendered as:
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```goat
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. . . .--- 1 .-- 1 / 1
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/ \ | | .---+ .-+ +
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/ \ .---+---. .--+--. | '--- 2 | '-- 2 / \ 2
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+ + | | | | ---+ ---+ +
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/ \ / \ .-+-. .-+-. .+. .+. | .--- 3 | .-- 3 \ / 3
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/ \ / \ | | | | | | | | '---+ '-+ +
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1 2 3 4 1 2 3 4 1 2 3 4 '--- 4 '-- 4 \ 4
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```
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## Mermaid diagrams
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Hugo currently does not provide default templates for Mermaid diagrams. But you can easily add your own. One way to do it would be to create `layouts/_default/_markup/render-codeblock-mermaid.html`:
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```go-html-template
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<pre class="mermaid">
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{{- .Inner | safeHTML }}
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</pre>
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{{ .Page.Store.Set "hasMermaid" true }}
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```
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And then include this snippet at the bottom of the content template (**Note**: below `.Content` as the render hook is not processed until `.Content` is executed):
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```go-html-template
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{{ if .Page.Store.Get "hasMermaid" }}
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<script type="module">
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import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.esm.min.mjs';
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mermaid.initialize({ startOnLoad: true });
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</script>
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{{ end }}
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```
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With that you can use the `mermaid` language in Markdown code blocks:
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````text
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```mermaid
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sequenceDiagram
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participant Alice
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participant Bob
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Alice->>John: Hello John, how are you?
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loop Healthcheck
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John->>John: Fight against hypochondria
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end
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Note right of John: Rational thoughts <br/>prevail!
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John-->>Alice: Great!
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John->>Bob: How about you?
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Bob-->>John: Jolly good!
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```
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````
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## Goat ASCII diagram examples
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### Graphics
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```goat
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.
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0 3 P * Eye / ^ /
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*-------* +y \ +) \ / Reflection
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1 /| 2 /| ^ \ \ \ v
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*-------* | | v0 \ v3 --------*--------
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| |4 | |7 | *----\-----*
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| *-----|-* +-----> +x / v X \ .-.<-------- o
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|/ |/ / / o \ | / | Refraction / \
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*-------* v / \ +-' / \
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5 6 +z v1 *------------------* v2 | o-----o
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v
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```
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### Complex
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```goat
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+-------------------+ ^ .---.
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| A Box |__.--.__ __.--> | .-. | |
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| | '--' v | * |<--- | |
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+-------------------+ '-' | |
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Round *---(-. |
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.-----------------. .-------. .----------. .-------. | | |
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| Mixed Rounded | | | / Diagonals \ | | | | | |
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| & Square Corners | '--. .--' / \ |---+---| '-)-' .--------.
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'--+------------+-' .--. | '-------+--------' | | | | / Search /
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| | | | '---. | '-------' | '-+------'
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|<---------->| | | | v Interior | ^
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' <---' '----' .-----------. ---. .--- v |
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.------------------. Diag line | .-------. +---. \ / . |
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| if (a > b) +---. .--->| | | | | Curved line \ / / \ |
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| obj->fcn() | \ / | '-------' |<--' + / \ |
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'------------------' '--' '--+--------' .--. .--. | .-. +Done?+-'
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.---+-----. | ^ |\ | | /| .--+ | | \ /
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| | | Join \|/ | | Curved | \| |/ | | \ | \ /
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| | +----> o --o-- '-' Vertical '--' '--' '-- '--' + .---.
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<--+---+-----' | /|\ | | 3 |
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v not:line 'quotes' .-' '---'
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.-. .---+--------. / A || B *bold* | ^
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| | | Not a dot | <---+---<-- A dash--is not a line v |
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'-' '---------+--' / Nor/is this. ---
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```
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### Process
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```goat
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.
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.---------. / \
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| START | / \ .-+-------+-. ___________
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'----+----' .-------. A / \ B | |COMPLEX| | / \ .-.
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| | END |<-----+CHOICE +----->| | | +--->+ PREPARATION +--->| X |
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v '-------' \ / | |PROCESS| | \___________/ '-'
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.---------. \ / '-+---+---+-'
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/ INPUT / \ /
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'-----+---' '
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| ^
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v |
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.-----------. .-----+-----. .-.
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| PROCESS +---------------->| PROCESS |<------+ X |
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'-----------' '-----------' '-'
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```
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### File tree
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Created from <https://arthursonzogni.com/Diagon/#Tree>
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```goat { width=300 color="orange" }
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───Linux─┬─Android
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├─Debian─┬─Ubuntu─┬─Lubuntu
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│ │ ├─Kubuntu
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│ │ ├─Xubuntu
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│ │ └─Xubuntu
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│ └─Mint
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├─Centos
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└─Fedora
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```
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### Sequence diagram
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<https://arthursonzogni.com/Diagon/#Sequence>
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```goat { class="w-40" }
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┌─────┐ ┌───┐
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│Alice│ │Bob│
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└──┬──┘ └─┬─┘
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│ │
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│ Hello Bob! │
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│───────────>│
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│ │
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│Hello Alice!│
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│<───────────│
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┌──┴──┐ ┌─┴─┐
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│Alice│ │Bob│
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└─────┘ └───┘
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```
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### Flowchart
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<https://arthursonzogni.com/Diagon/#Flowchart>
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```goat
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_________________
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╱ ╲ ┌─────┐
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╱ DO YOU UNDERSTAND ╲____________________________________________________│GOOD!│
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╲ FLOW CHARTS? ╱yes └──┬──┘
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╲_________________╱ │
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│no │
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_________▽_________ ______________________ │
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╱ ╲ ╱ ╲ ┌────┐ │
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╱ OKAY, YOU SEE THE ╲________________╱ ... AND YOU CAN SEE ╲___│GOOD│ │
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╲ LINE LABELED 'YES'? ╱yes ╲ THE ONES LABELED 'NO'? ╱yes└──┬─┘ │
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╲___________________╱ ╲______________________╱ │ │
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│no │no │ │
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________▽_________ _________▽__________ │ │
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╱ ╲ ┌───────────┐ ╱ ╲ │ │
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╱ BUT YOU SEE THE ╲___│WAIT, WHAT?│ ╱ BUT YOU JUST ╲___ │ │
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╲ ONES LABELED 'NO'? ╱yes└───────────┘ ╲ FOLLOWED THEM TWICE? ╱yes│ │ │
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╲__________________╱ ╲____________________╱ │ │ │
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│no │no │ │ │
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┌───▽───┐ │ │ │ │
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│LISTEN.│ └───────┬───────┘ │ │
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└───┬───┘ ┌──────▽─────┐ │ │
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┌─────▽────┐ │(THAT WASN'T│ │ │
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│I HATE YOU│ │A QUESTION) │ │ │
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└──────────┘ └──────┬─────┘ │ │
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┌────▽───┐ │ │
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│SCREW IT│ │ │
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└────┬───┘ │ │
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└─────┬─────┘ │
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│ │
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└─────┬─────┘
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┌───────▽──────┐
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│LET'S GO DRING│
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└───────┬──────┘
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┌─────────▽─────────┐
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│HEY, I SHOULD TRY │
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│INSTALLING FREEBSD!│
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└───────────────────┘
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```
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### Table
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<https://arthursonzogni.com/Diagon/#Table>
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```goat { class="w-80 dark-blue" }
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┌────────────────────────────────────────────────┐
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│ │
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├────────────────────────────────────────────────┤
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│SYNTAX = { PRODUCTION } . │
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├────────────────────────────────────────────────┤
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│PRODUCTION = IDENTIFIER "=" EXPRESSION "." . │
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├────────────────────────────────────────────────┤
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│EXPRESSION = TERM { "|" TERM } . │
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├────────────────────────────────────────────────┤
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│TERM = FACTOR { FACTOR } . │
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├────────────────────────────────────────────────┤
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│FACTOR = IDENTIFIER │
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├────────────────────────────────────────────────┤
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│ | LITERAL │
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├────────────────────────────────────────────────┤
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│ | "[" EXPRESSION "]" │
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├────────────────────────────────────────────────┤
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│ | "(" EXPRESSION ")" │
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├────────────────────────────────────────────────┤
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│ | "{" EXPRESSION "}" . │
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├────────────────────────────────────────────────┤
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│IDENTIFIER = letter { letter } . │
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├────────────────────────────────────────────────┤
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│LITERAL = """" character { character } """" .│
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└────────────────────────────────────────────────┘
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```
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