HTML (Hyper Text Markup Language, The Language behind Web Pages)
WWW
World Wide Web
SGML
Standard Generalized Markup Language--a standard for describing markup languages
DTD
Document Type Definition--this is the formal specification of a markup language, written using SGML
HTML
Hyper Text Markup Language--HTML is an SGML DTD
In practical terms, HTML is a collection of platform-independent styles (indicated by markup tags) that define the various components of a World Wide Web document. HTML was invented by Tim Berners-Lee while at CERN, the European Laboratory for Particle Physics in Geneva.
HTML is plain text with special tags (“markups”) which are used to create different effects. A web browser will “read” HTML and add in the effects so the person viewing the page can see it as intended.
Web pages can be created in a number of ways, using a WYSIWYG (What You See Is What You Get) editor
such as Microsoft FrontPage , or Macromedia Dreamweaver, 1st Page 2000, Adobe products etc. or you can simply make them in a plain text editor.
What's XHTML?
The evolution of HTML has essentially stopped. Instead, HTML is being replaced by a new language, called XHTML.
XHTML is in many ways similar to HTML, but is designed to work with the new eXtensible Markup Language, or XML, that will soon serve as the core language for designing all sorts of new Web applications, in which XHTML will be only one of many "languages." But, XHTML is designed to work with these other language, so that different documents, in different languages, can be easily mixed together. For this to work, the rules for writing HTML documents had to change. Some of these rules are simple, and are as follows:
All tag and attribute names must be in lowercase. Thus, you can't write News but must instead write this in lowercase, as : News
"Empty" tags must be written with an extra slash at the end. An empty tag is one like
(equivalent to break)
or that doesn't have a or to end it. In XHTML, such tags must be written as:
. You can never omit an end tag.
These were some of the rules...
