To block the crawl of a subdirectory called "results" but allow the crawling of everything else within the domain, you can use the following `robots.txt` rules:
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`User-agent: * Allow: / Disallow: /results/`
The `User-agent: *` line applies the rules that follow to all search engines. The `Allow: /` line allows the crawl of all URLs within the domain, while the `Disallow: /results/` line blocks the crawl of the `results` subdirectory and all its contents.
Note that these rules are only a suggestion to search engines, and they may choose to ignore them. It is also important to note that blocking the crawl of a directory or page with `robots.txt` does not guarantee that it will not be indexed by search engines.
