Reference

Iterates over a node-set or sequence, applying the contained template body to each item in document order.

Groups a sequence of items by a key expression or adjacent values, then iterates over each distinct group.

Processes a streamed sequence in multiple independent branches simultaneously, enabling multiple aggregations in a single pass over a large document.

Defines a named, callable stylesheet function available in XPath expressions throughout the stylesheet.

Conditionally outputs content when a boolean XPath expression evaluates to true; has no else branch.

Imports another stylesheet at a lower import precedence, allowing the importing stylesheet to override any of its declarations.

Imports an XML Schema to enable schema-aware processing, typed variable declarations, and validation of input and output documents.

Merges another stylesheet's top-level declarations into the current stylesheet at the same import precedence.

Processes a sequence item-by-item with carry-forward parameters, enabling efficient streaming and stateful iteration in XSLT 3.0.

Creates an XDM map from one or more xsl:map-entry children, enabling key-value data structures directly in XSLT 3.0 stylesheets.