actually it's 5, there's also csv. Afaict it's not meant to be used in that way
though so let's just add org.
## Front Matter Formats
-Hugo supports three formats for front matter, each with their own identifying tokens.
+Hugo supports four formats for front matter, each with their own identifying tokens.
TOML
: identified by opening and closing `+++`.
JSON
: a single JSON object surrounded by '`{`' and '`}`', followed by a new line.
+ORG
+: a group of Org mode keywords in the format '`#+KEY: VALUE`'. Any line that does not start with `#+` ends the front matter section.
+ Keyword values can be either strings (`#+KEY: VALUE`) or a whitespace separated list of strings (`#+KEY[]: VALUE_1 VALUE_2`).
+
### Example
{{< code-toggle >}}