In the Vinony graph
It is catalogued under the topic Country data templates.
Its subject is documented across 28 Wikipedia language editions.
~1 min read
Encyclopedic overview
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This template is deliberately empty. It is used when a default "nothing" value is needed in a parameterized use of Template:Flag icon etc. For example, {{flag icon|none}} renders nothing, so none can be used as a default value for templates that use flag icon to optionally render a flag.
Excerpted from Wikipedia’s “Template:Country data none” article, available under the CC BY-SA 4.0 licence.