我正在考虑使用中间格式 XML(XSL-FO).
我的问题：如果没有那么多应用程序呈现它,为什么FO格式很受欢迎？
我很清楚CSS和XSL-FO支持者之间正在进行一场激烈的辩论,双方都有有效和优点.这是迄今为止我见过的XSL-FO的最佳简要论点：
XSL-FO provides a more sophisticated
visual layout model than HTML+CSS.
Formatting supported by XSL-FO, but
not supported by HTML+CSS, includes
right-to-left and top-to-bottom text,
footnotes, margin notes, page numbers
in cross-references, and more. In
particular, while CSS (Cascading Style
Sheets) is primarily intended for use
on the Web, XSL-FO is designed for
broader use. You should, for instance,
be able to write an XSL style sheet
that uses formatting objects to lay
out an entire printed book. A
different style sheet should be able
to transform the same XML document
into a Web site.
(来源：http://www.cafeconleche.org/books/bible2/chapters/ch18.html)
以下是一些争论XSL-FO是优越的：
> Norman Walsh’s blog post
虽然这里有人说CSS更好：
> RealObjects: CSS vs. XSL
> Printing XML: why CSS is better than XSL-FO