YAML format is widely used in software.
You can use PlantUML to visualize your data.
To activate this feature, the diagram must:
- begin with @startyamlkeyword
- end with @endyamlkeyword.
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@startyaml
fruit: Apple
size: Large
color: 
  - Red
  - Green
@endyaml
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@startyaml
doe: "a deer, a female deer"
ray: "a drop of golden sun"
pi: 3.14159
xmas: true
french-hens: 3
calling-birds: 
	- huey
	- dewey
	- louie
	- fred
xmas-fifth-day: 
	calling-birds: four
	french-hens: 3
	golden-rings: 5
	partridges: 
		count: 1
		location: "a pear tree"
	turtle-doves: two
@endyaml
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@startyaml
@fruit: Apple
$size: Large
&color: Red
❤: Heart
‰: Per mille
@endyaml
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[Ref. QA-13376]
Normal style
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@startyaml
#highlight "french-hens"
#highlight "xmas-fifth-day" / "partridges"
doe: "a deer, a female deer"
ray: "a drop of golden sun"
pi: 3.14159
xmas: true
french-hens: 3
calling-birds: 
	- huey
	- dewey
	- louie
	- fred
xmas-fifth-day: 
	calling-birds: four
	french-hens: 3
	golden-rings: 5
	partridges: 
		count: 1
		location: "a pear tree"
	turtle-doves: two
@endyaml
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Customised style 
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@startyaml
<style>
yamlDiagram {
    highlight {
      BackGroundColor red
      FontColor white
      FontStyle italic
    }
}
</style>
#highlight "french-hens"
#highlight "xmas-fifth-day" / "partridges"
doe: "a deer, a female deer"
ray: "a drop of golden sun"
pi: 3.14159
xmas: true
french-hens: 3
calling-birds: 
	- huey
	- dewey
	- louie
	- fred
xmas-fifth-day: 
	calling-birds: four
	french-hens: 3
	golden-rings: 5
	partridges: 
		count: 1
		location: "a pear tree"
	turtle-doves: two
@endyaml
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[Ref. QA-13288]
It is possible to have different styles for different highlights.
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@startyaml
<style>
    .h1 {
      BackGroundColor green
      FontColor white
      FontStyle italic
    }
    .h2 {
      BackGroundColor red
      FontColor white
      FontStyle italic
    }
</style>
#highlight "french-hens" <<h1>>
#highlight "xmas-fifth-day" / "partridges" <<h2>>
doe: "a deer, a female deer"
ray: "a drop of golden sun"
pi: 3.14159
xmas: true
french-hens: 3
calling-birds: 
	- huey
	- dewey
	- louie
	- fred
xmas-fifth-day: 
	calling-birds: four
	french-hens: 3
	golden-rings: 5
	partridges: 
		count: 1
		location: "a pear tree"
	turtle-doves: two
@endyaml
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[Ref. QA-15756, GH-1393]
Without style (by default)
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@startyaml
  -
    name: Mark McGwire
    hr:   65
    avg:  0.278
  -
    name: Sammy Sosa
    hr:   63
    avg:  0.288
@endyaml
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With style
You can use 
style to change rendering of elements.
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@startyaml
<style>
yamlDiagram {
  node {
    BackGroundColor lightblue
    LineColor lightblue
    FontName Helvetica
    FontColor red
    FontSize 18
    FontStyle bold
    BackGroundColor Khaki
    RoundCorner 0
    LineThickness 2
    LineStyle 10-5
    separator {
      LineThickness 0.5
      LineColor black
      LineStyle 1-5
    }
  }
  arrow {
    BackGroundColor lightblue
    LineColor green
    LineThickness 2
    LineStyle 2-5
  }
}
</style>
  -
    name: Mark McGwire
    hr:   65
    avg:  0.278
  -
    name: Sammy Sosa
    hr:   63
    avg:  0.288
@endyaml
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[Ref. QA-13123]
You can use 
Creole or HTML Creole on YAML diagram:
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@startyaml
Creole:
  wave: ~~wave~~
  bold: **bold**
  italics: //italics//
  monospaced: ""monospaced""
  stricken-out: --stricken-out--
  underlined: __underlined__
  not-underlined: ~__not underlined__
  wave-underlined: ~~wave-underlined~~
HTML Creole:
  bold: <b>bold
  italics: <i>italics
  monospaced: <font:monospaced>monospaced
  stroked: <s>stroked
  underlined: <u>underlined
  waved: <w>waved
  green-stroked: <s:green>stroked
  red-underlined: <u:red>underlined
  blue-waved: <w:#0000FF>waved
  Blue: <color:blue>Blue
  Orange: <back:orange>Orange background
  big: <size:20>big
Graphic:
  OpenIconic: account-login <&account-login> 
  Unicode: This is <U+221E> long
  Emoji: <:calendar:> Calendar
  Image: <img:https://plantuml.com/logo3.png>
@endyaml
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