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.
Module documentation
Implements {{Vertical header}}
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).