Bob>A couple of questions though: 1. Is there an obvious reason not to use: div.i0 {margin-left: 0em; padding-left: 3em; text-indent: -3em;}, etc and <div class="i0">There was a young man...</div>, etc? Somehow using a tag which is inherently a block seems more simple and obvious than using a span with {display: block;} 2. Is there an unstated reason/convention for describing an indent of 1em as class=i2, 2em as class=i4, etc? This is not a trick question, I ask from curiosity/ignorance. If I remember right I think I tried it both ways and found it did not help generate better results on mobi devices, in which case there is not a practical reason to prefer one to the other. Most people (who write poetry examples on the web) seem to be more comfortable labeling "sentence-like or less" structures as being "spans" and "paragraph-sized" structures as being "divs" -- whether or not each of those is best rendered "block" vs. "inline." I assume "i0" might mean "indent 0" and "i2" might mean "indent 2" where if one actually tries it one finds that a size of 1em corresponds to a width of approx 2 lower case letters. A em unit corresponding [approximately?] to the width of a font's em-dash, which is about two lower chars wide. Trying to dig into this more, I think W3C is taking an "em" to mean an em-square, i.e. the vertical size and horizontal size of an em are identical (say square pixel) units. So a tall skinning font effectively indents more on a "1 em" specification that an short fat font, since an "em" is the height of a capital 'M' in a given font. [1 em being literally the "font-size" of a particular font, but then I can't find a W3C definition of "font-size" presumably because that was considered too obvious.] And then you have the problem that the reported "font-sizes" of different fonts on different machines or even within one machine goes all over the place, such that mixing fonts of "the same font size" clearly doesn't work if one actually tries this on different machines! PS: Scream: how can it be that font designers cannot even agree on what a "font-size" such as "pts" mean??? PPS: Mobi machines getting all this font size specification "1 em" etc. stuff *way wrong* in any case! PPPS: Some "poetry experts" who want to get this stuff to look right on Kindle hard-wire the indents using which does work on the Klassic Kindles (as opposed to the guiguts approach suggested previously which is fail-soft on the Kindles) but that approach is so ugly I am assuming PG'ers would throw a hissy fit if told to take that approach.