In technical terms, intitle: tells a search engine to only return pages where the specified text appears in the HTML title tag. For a phrase like intitle:"windows xp" , the results usually point to:

Always check the SHA-256 hash of any XP file against known Microsoft MSDN databases to ensure it hasn't been injected with malware.

, where users upload custom "Slipstreamed" versions of Windows XP that include a "5" in the title to indicate a version number or a specific collection of updates. Safety and Security Note