AI overview
I don't have any context provided in your message to base an overview on. You mentioned "Based ONLY on this context" but didn't include the actual context about "Module:Vertical header." Could you please provide the specific information or documentation about this module so I can write an accurate overview?
AI-generated from the Wikipedia summary — may contain errors.
In the Vinony graph
It is catalogued under the topic Templates using TemplateStyles.
Vinony links it to 56 Wikipedia language editions.