Corner Office: Know the Code
In older versions of HTML, say you wanted to list an address book or something. You might have something that loops through and describes how that address book would look in a browser, what the person's name would look like, what the image would look like and what the size would be. An HTML5 document … says what it is, not what it looks like, which makes it completely portable because you can use CSS to style that person's name to be whatever color, size, dimensions you want it to be.
So HTML5 recognizes what that is supposed to do and then you can put it into any context.
HTML5 has removed all of the presentation tags. There has been an evolution of HTML over time. HTML4 had a lot of those things—it even had things like the 'blink tag' that don't have any semantic meaning, they just describe behaviors and presentation. Those have been slowly removed and HTML5 is the final removal of all of those things. It also introduces a lot of new ways of having metadata, like micro formats and things like that, that allow programmatic usage of these documents, so a machine—a program—can come in, read the document, interpret meaning from tags that are embedded in the document and be able to improve your search results and aggregate against certain things. PE
Editor's Note: The online version of this story has been revised to reflect the following correction: MacWorld and PCWorld are not being merged into TechHive.com, as originally stated in the second paragraph. MacWorld, PCWorld and TechHive.com are being merged into one platform but will maintain separate Web brands.