XML allows industries to design specific tag languages to solve specific problems. Early examples:

• Chemical Markup Language (CML)
• Channel Definition Format (CDF)
• Open Financial Exchange (OFX)
• Handheld Device Markup Language (HDML)
• Resource Description Framework (RDF)
• Mathematics Markup Language (MathML)
• Precision Graphics Markup Language (PGML)

The advantage for implementors is that an unlimited number of domain-specific tag languages can all be processed by a single parser built into every Web browser.

XML & JAVA:   PORTABLE DATA — PORTABLE PROGRAMS