How to use YAML or JSON for Front Matter with Hugo?
Forestry respects the configuration set in your Hugo
config file. The variable you have to set to change the default Front Matter format is called
## Possible options "yaml", "toml" or "json" metaDataFormat = "toml"
## Possible options "yaml", "toml" or "json" metaDataFormat: "yaml"
This option has now been deprecated in recent Hugo versions. The format is now based on the front matter used in your archetypes.
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