PPI (Pixels per inch) - a measurement of the resolution of devices in various contexts.
SGML (Standard Generalized Markup Language) - is an ISO Standard metalanguage in which one can define markup languages for documents.
SMIL (Synchronized Multimedia Integration Language) - a W3C-recommended XML markup language for describing multimedia presentations.
XSL (Extensible Stylesheet Language) - a set of language technologies for defining XML document transformation and presentation.
Malware - is software designed to infiltrate or damage a computer system without the user's informed consent.
Source: Wikipedia.org, Dictionary