I really don't understand what site:any and site:all mean? Sorry for the dumb questions but I just don't know what they mean

-- Difference between site:all and site:any

When indexing, yioop creates index records for each web page it visits. For the links it decides to extract from a page, it also creates index records. If a linked-to page is never downloaded, then these link index records might still contain information about that page. For example, Facebook's page might link to Yahoo, I crawl Facebook, but stop the crawl before crawling Yahoo. I will have a link index record for Yahoo but not an index record for the actual page. Over the years, how these link index records are incorporated into search results has varied. They are hardly incorporated at all in Yioop version 5, but will be more incorporated in version 6. No matter the version though, a search on site:all will only return actual web page index info, whereas, site:any will return both web page and link records. Best, Chris