According to File.org, the .FILE extension is just a generic file extension Windows uses. As it explains: The .file file extension is a generic extension. This is assigned by Windows and other applications when the file is in an unknown format. These Web applications that designate the .file extension to files in unknown file types are usually Web tools like Internet browsers, FTP client ...
How do I open a file with the file extension “FILE?” - Super User
file:/ is invalid as far as I know file:// is the prefix for the file protocol file:/// is the prefix for the file protocol, plus a leading / pointing to the root directory of the current drive (On Windows) or the overall root directory (On Linux / Unix).
url - What is the difference between file:/, file ... - Stack Overflow
When your account reaches its storage limit, you won't be able to upload or create files in Drive, send or receive emails in Gmail, or back up photos or videos to Google Photos. If you're over your storage quota for 2 years, we might delete your content across Gmail, Drive, and Photos. Learn more about Google storage policies.
Owner File (Same Directory as Source File): When a previously saved file is opened for editing, for printing, or for review, Word creates a temporary file that has a .doc file name extension. This file name extension begins with a tilde (~) that is followed by a dollar sign ($) that is followed by the remainder of the original file name.
Learn about handling file selection events in HTML using the tag and JavaScript.