array:flatten
Replaces any array appearing in a supplied sequence with the members of the array, recursively.
flatten($input as item()*) ➔ item()*
Arguments  | |||
  | $input  | item()*  | The input sequence  | 
Result  | item()*  | ||
Namespace
http://www.w3.org/2005/xpath-functions/array
Links to W3C specifications
XPath 3.1 Functions and Operators
Notes on the Saxon implementation
Available since Saxon 9.7.