If this page is saved by the browser, which filename will be used?

"used" = "used by default" = "proposed"

doctype: xhtml1.0Strict

Try it!

filename of this file: download-filename.htm

<title>Which download filename? (xhtml1.0Strict)</title>

<meta name="description"
      content="Which download filename is used if this page is saved by the browser?" />

<meta name="title"
      content="Filename if saved?" />

<h1>If this page is saved by the browser, which filename will be used?</h1>

• Note: the question mark in the <title> is present in the browser bar, but stripped in the download-filename (not allowed URI in this way).
• Note: the html-validator is positive, the <meta name="title" content="..."> is permitted in xhtml1.0Strict (but useless).
• Note: the <title> is also used for the (proposed) name of a Bookmark/Favorite, inclusive the question mark.