Formatting objects and properties

XSL = XSLT + vocabulary of FOs and properties

XSL defines a powerful set of formatting objects

XSL uses (and extends) a set of Common Formatting Properties developed jointly with the CSS&FP (Cascading Style Sheet and Formatting Property) Working Group

When a result tree uses this standardized set of formatting objects and properties, then an XSL-compliant formatter can process that result tree to produce the specified output