I don't have the specific context you're referring to about "Category:User en-3" to provide an accurate overview based solely on your instructions. To write an accurate 2-sentence explanation without inventing facts, I would need you to provide the actual context or definition of this category.
AI-generated from the Wikipedia summary — may contain errors.
This is a list of Wikipedians that are able to contribute with an advanced level of English.
To add yourself into this category, you may add the userbox {{User en-3}}:
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).