~~INTRODUCTION OF XML~~
Extensible Markup Language (XML) is a set of rules for encoding documents in machine-readable form.
XML's design goals emphasize simplicity, generality, and usability over the Internet.^[6] It is a textual data format with strong support via Unicode for the languages of the world. Although the design of XML focuses on documents, it is widely used for the representation of arbitrary data structures, for example in web services.

~~THE DIFFERENCE BETWEEN XML AND HTML~~

• xml is not a replacement for html
• xml was designed to transport data while html was designed to display data
• html is about displaying information, while xml is about carrying information

XML TABLE

Molecular Mechanics	Semi Empirical	Ab Initio
Very Fast Speed	Fast Speed	Slow Speed
Restriction Parameters	Good Accuracy	Very Good Accuracy
Very Good Protein Modelling	Good Protein Modelling	Best Protein Modelling

XML DOCUMENTS

<Molecular mechanics="”Very fast speed">

Fast Speed

Slow Speed

< /Molecular Mechanics>

< Molecular mechanics="”Restriction">

Good Accuracy

Very Good Accuracy

< /Molecular Mechanics>

<Molecular mechanics="”Very">

Good Protein Modelling

Best Protein Modelling

< /Molecular Mechanics>

XML TREE