What is XML?

A technical clarification of XML or Extensible Markup Language is “a request markup
language for defining structured information”. But that is a bit abstract, so
let’s take it step-by-step.

What is a Markup Language?

When we write content in a Word processor, we are indeed essay some-more than
just the difference on the screen. You are also including information about how
that content looks, even if we do zero though start typing:

is it in Times New Roman rise or Geneva?
is it black or red?
is it 12 indicate or 36 point?
is there a divide after the initial 45 characters? or 60?
is there a plane order after the third paragraph?
are there images embeded in the document?
and so on…

With many word processors the information about how the content looks is dark from
you.

Markup languages are codes to tell the mechanism dark information about text
documents.

For example: to conclude the bulletted list above, we used HTML markup language
(shown in confidant for this example):
p
ul
liis it in Times New Roman rise or Geneva?/li
liis it black or red?/li
liis it 12 indicate or 36 point?/li
liis there a divide after the initial 45 characters? or 60?/li
liis there a plane order after the third paragraph?/li
liare there images embeded in the document?/li
liand so on…/li
/ul
/p

When we demeanour during the Web page (or a word processed document) all we see is
the content and the bullet points tangible by the markup. But when we demeanour during the
HTML, we see markup tags like ul and li that tell the browser
how to arrangement the text.

Hidden Information

When HTML (a markup denunciation for the Web) initial came out, it was really similar
to a word processor. The dark information that it encoded was mostly about
how the content would demeanour in the Web browser. Just like the word processor you
could define: