AI overview
I don't have access to the actual "Help:Searching" page context you're referring to. To write an accurate overview based only on the provided information, I would need you to share the actual content or text from that Wikimedia help page. Could you please provide the context from "Help:Searching" that you'd like me to base the overview on?
AI-generated from the Wikipedia summary — may contain errors.
Article
The search box on every page accesses the internal search engine. It will navigate directly to a given page name upon an exact match. You can force it to show you other pages that include your search string by including a tilde character ~ before the first term of a query. The maximum search string is 300 characters long. However, search can instantly search all 65,689,644 pages on the wiki when the search is kept to a simple word or two.
Wikipedia's searches can be made domain-specific (i.e., search in desired namespaces). The search engine also supports special characters and parameters to extend the power of searches and allow users to make their search strings more specific.