YAML (YAML Ain't Markup Language) is a lightweight text-based data standard for describing structured data.

As a human-readable format, it offers an alternative to explicitly tagged structured data such as XML. The JSON format is a subset of YAML 1.2.

The YAML package provides tools for parsing and generating YAML expressions.

The general-purpose commands Import and Export also support this format.

$\mathrm{YAML}:-\mathrm{ParseString}\left(''[1,\; 2,\; 3.265,\; 6.01,\; 7.373]''\right)$

$\left[1\,2\,3.265\,6.01\,7.373\right]$

$\mathrm{Import}\left(''example/address.yaml''\,\mathrm{base}=\mathrm{datadir}\right)$

$table\left(\left[''address''=table\left(\left[''country''=''Canada''\,''province''=''ON''\,''city''=''Waterloo''\,''streetAddress''=''615\; Kumpf\; Drive''\,''postalCode''=''N2V\; 1K8''\right]\right)\,''founded''=1988\,''companyName''=''Maplesoft''\,''phoneNumbers''=\left[table\left(\left[''type''=''local''\,''number''=''+1\; (519)\; 747-2373''\right]\right)\,table\left(\left[''type''=''toll-free''\,''number''=''+1\; (800)\; 267-6583''\right]\right)\,table\left(\left[''type''=''fax''\,''number''=''+1\; (519)\; 747-5284''\right]\right)\right]\right]\right)$

$\mathrm{Mouse}≔\mathrm{table}\left(\left[''Genus''=''Mus''\,''Species''=''musculus''\right]\right)$

$\mathrm{Mouse}≔table\left(\left[''Genus''=''Mus''\,''Species''=''musculus''\right]\right)$

$\mathrm{Mouse}\left[''Family''\right]≔''Muridae''$

${\mathrm{Mouse}}_{''Family''}≔''Muridae''$

$\mathrm{Mouse}\left[''Order''\right]≔''Rodentia''$

${\mathrm{Mouse}}_{''Order''}≔''Rodentia''$

$\mathrm{Mouse}\left[''Class''\right]≔''Mammalia''$

${\mathrm{Mouse}}_{''Class''}≔''Mammalia''$

$\mathrm{Export}\left(''mouse.yaml''\,\mathrm{Mouse}\,\mathrm{base}=\mathrm{homedir}\right)$

$80$

YAML 1.2 Language Specification, http://www.yaml.org/spec/1.2/spec.html, yaml.org.