Open a file detail page by clicking a file name on a Chatter feed, on a files list, on a file hover, or by clicking More Actions | View file detail page next to the file in a feed. On the file detail page, you can see details about Chatter files and Salesforce CRM Content files, but you can only perform actions on Chatter files. To perform actions on files that originated in Salesforce CRM Content, click Go to Content Detail Page.