Semantic Mark-Ups

hi all, this is an introduction to semantic markups which i know and posts this for the use of others out here. have a look at this and post comment about this. hope this will be useful.
CSS is making it easier than ever to control the visual presentation of our (X)HTML documents. However, good document structure is just as important as ever. Semantic markup is good for that and its useful to develop the visual presentation of the websites.Semantics mark-ups means the correct use of the tags in the right place .semantic is based on XHTMl.
The tags used in the semantics should be globally used and those tags should be used consistently throughout the page. for eg, if in a page H1 tag is used to display the title of the page then it should be used only for titles and not for other items in the page.
Also, the usage of correct tag in the sense , there can be usage of breaks in between of the paragraphs but instead we can use paragraph tags promptly between the lines like wise it goes.
(X)HTML contains three semantic elements you can use to mark up text on your web page that comes from or names an external source: blockquote, q, and cite. Although blockquote is widely used across the web, q and cite are relatively unknown and underused.
The table Element is the most misused in semantic element. Beyond just rows and cells, (X)HTML provides some additional elements and attributes that can add structure and accessibility to the tables and make things easier to do the styles.some more elements like thead, tfoot, tbody, col, and colgroup elements are also used to format the table .
Address, del, ins, hr, pre, sub, sup, and title are some more elements in semantics.