A rare copy of the US Constitution that was found inside a filing cabinet sold for $9 million at auction this week. It took just seven minutes for the nearly 237-year-old document to clinch its ...

A rare copy of the U.S. Constitution forgotten inside a filing cabinet sold on Thursday for a $9 million hammer price, Andrew Brunk, the owner of the auction house managing the sale, confirmed to ...

The obvious reason why you need to lock a PDF from editing is to preserve the contents of the document from being modified. It’s one of the most basic ways of copywriting a file and it’s especially ...