Displaying a file in a Moodle course

To summarise:

• Do you want Moodle to sort it all out for you? - Automatic
• Do you want to force the user to save the file (or open it in a program on their desktop)? - Force download
• Do you want to show the file as part of the Moodle page (images, PDFs, videos)? - Embed
• Do you want to show the file in the browser, but without the Moodle page decorations (images, PDFs, videos)? - Open
• Do you want that, but in a new window? - In Pop-up (or possibly 'New window')
• Do you want to use a horrible bit of non-strict HTML that should never be allowed in polite company? - In frame