title: Alternatives to white-space:nowrap when using text-overflow:ellipsis
body: <p>On his <a href="http://www.quirksmode.org/css/textoverflow.html" rel="noreferrer">demo page</a>, PPK says that text-overflow:ellipsis requires (among other things) that "the box has white-space: nowrap or a similar method of constraining the way the text is layed out."</p>
  
  <p>Does anyone have any idea what other types of "constraints" he's referring to? I've tried all the other options for white-space, but none of them give me what I want. I don't believe that all he meant by the phrase "similar method of constraining" was simply "any other white-space setting," but I haven't been able to think of any other text-layout constraints.</p>
  
  <p>I ask because I'd like to display up to two lines of text before visually truncating the text (which I accomplish using height:2.5em), and white-space:nowrap prevents the text from wrapping to fill the space I've allocated.</p>