Reference

Emits a diagnostic message to the processor's error output; optionally terminates transformation with terminate='yes'.

Maps a namespace prefix used in the stylesheet to a different prefix in the result tree, enabling stylesheets that generate XSLT.

Formats a number or automatically generates a sequence number based on the node's position in the document.

Inside xsl:use-package, provides local implementations that replace specific components imported from the used package.

The root element of an XSLT 3.0 package, a named and versioned reusable unit of stylesheet components.

Declares which accumulators are active for a streaming template or mode, enabling the processor to compute only necessary values.

Declares that the current stylesheet or package uses components from a named external XSLT 3.0 package.

Asserts that the sequence contains zero or one items; raises a dynamic error if it contains more than one item.

Returns the absolute value of a numeric argument, removing any negative sign while preserving the numeric type.

Calls a function item with arguments supplied as an array, enabling dynamic dispatch with a variable argument list.