Xhtml
Document Actions
XHTML (Extensible HyperText Markup Language) combines XML strictness on theory with HTML usability in order to develop new potentials, without losing compatibility with the existent browsers.
That is a new standard web language, released by W3C on January 2000.
Compared to HTML 4.0, tags are almost the same but some syntactic rules are different.
XHTML documents obey to XML and so they can be easily written, diplayed and validated according to XML syntaxis rules.
These rules are described in DTD (Document Type Definition) and identify allowed tags, their meaning, how they should be treated. In a XHTML document, DTD must be specified at the beginning.
XHTML is a cleaner, more manageable and logical code because, at least in the Strict version, it defines only its structure, while the formatting is done only with CSS.
One more advantage of this language is its portability: a document can be easily displayed and implemented on several systems as PC, PDA, WAP/GPRS mobile phones, WebTV.
So if XHTML is XML, it becomes exensible. It will be possible to insert written parts (in any XML language) in a document.
Documents written in XHTML and validated, are more accessible because a web page avoiding non-standard elements, is easier to manage by an alternative browser, for example the vocal one.
Compared to HTML 4.0, tags are almost the same but some syntactic rules are different.
XHTML documents obey to XML and so they can be easily written, diplayed and validated according to XML syntaxis rules.
These rules are described in DTD (Document Type Definition) and identify allowed tags, their meaning, how they should be treated. In a XHTML document, DTD must be specified at the beginning.
XHTML is a cleaner, more manageable and logical code because, at least in the Strict version, it defines only its structure, while the formatting is done only with CSS.
One more advantage of this language is its portability: a document can be easily displayed and implemented on several systems as PC, PDA, WAP/GPRS mobile phones, WebTV.
So if XHTML is XML, it becomes exensible. It will be possible to insert written parts (in any XML language) in a document.
Documents written in XHTML and validated, are more accessible because a web page avoiding non-standard elements, is easier to manage by an alternative browser, for example the vocal one.
