Template:Europe topic/doc

Disabling links for England, Northern Ireland, Scotland, and Wales
Some topics may have an article for the United Kingdom, but no equivalent articles for the UK constituent countries of England, Northern Ireland, Scotland, and Wales. To disable their inclusion in a template (that would otherwise appear as red links), add the parameter "UK_only=yes". :
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Disabling links for European Union and Sovereign Military Order of Malta
If some topic is unapplicable to these entities they can be removed from the list by the addition of the parameter "no_other_entities=yes". Additionally there is a rough check for existence of the particular EU/SMOM article and if there isn't such - the entitiy with a missing article is not shown in the template (see Vatican City-explanation below). :
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Additionally, if some template is applicable to only one of these two entities, the redundant entity can be removed by adding the corresponding parameter as shown below: and
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Vatican City
As the Vatican is such a small country, with 0.44 km2 and 826 inhabitants, many articles about it would be meaningless; for example, "Hinduism in the Vatican City". So the condition for the Vatican to appear in any template created using this one is the preexistence of the article about the Vatican. That is why the Vatican City doesn't appear on many templates (such as Hinduism in Europe).