Including Files in html
You could use server side includes (include_file.shtml), but then it doesnt work (or does it) if you're just viewing a file using the browser.
Using <iframe src=included_text.html> [place here text to display if iframe is not implemented] </iframe>
iframe is inline. Without a <p> before the iframe, it looks like this:
Here's an iframe with frameborder=0 marginwidth=0 marginheight=0 and <p>: