I don't have any context provided to base an overview on. You mentioned "Base it ONLY on this context; do not invent facts" but no actual context about "Project:Changing username" was included in your message. Could you please provide the context you'd like me to work from?
AI-generated from the Wikipedia summary — may contain errors.
Users may request that their username be changed. Usernames are global; a username change will change your username on all Wikimedia projects. Username changes are handled by global renamers and stewards, not by local administrators or bureaucrats, and are governed by the global rename policy and local username policy.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).