"info is only as good as it is packaged."

XML is a method of creating markup languages

XML information pieces called 'elements'

SAMPLE XML:

<?xml version="1.0"?>
<!DOCTYPE telegram SYSTEM "/xml-resources/dtds/telegram.dtd">
<telegram pri="important">
  <to>Sarah Bellum</to>
  <from>Colonel Timeslip</from>
  <subject>Robot-sitting instructions</subject>
  <graphic fileref="figs/me.eps"/>
  <message>Thanks for watching my robot pal 
    <name>Zonky</name> while I'm away. 
    He needs to be recharged <emphasis>twice a
    day</emphasis> and if he starts to get cranky, 
    give him a quart of oil. I'll be back soon, 
    after I've tracked down that evil 
    mastermind <villain>Dr. Indigo Riceway</villain>.
  </message>
</telegram>

XML to seperate markup from presentation.

entities are ways of importing seperate elements into an XML sheet

DTDs are made to define your markup language

XSL-F0 - formats the text

XSLT - outputs it