Tài liệu SSI environment variables

You’ve built your site, added some helpful JavaScript to make it fun, tweaked
things to ensure that your site is indexed well for search engines, and you’ve
even validated your XHTML and CSS code (see Chapter 16), so you’re finished,
right?
Well, you could be done if all you want is a site that shows off your sense of cool.
But in this chapter, I spend some time talking about the user experience, about
what your visitors may think about your design and how you can develop a Web
site that’s not only visually attractive and informative, but highly usable too. To
do this, I have to delve into the world of human computer interaction, or HCI. But
don’t panic! I promise this’ll be interesting and not overly academic.
Also, keep in mind that these rules are all in the “made to be broken” vein. You
could theoretically build a site that is compliant with every nuance of every rule,
but more likely you’ll find that some help you produce cool sites, whereas other
rules end up just being obstacles. That’s okay.