See https://www.w3.org/TR/xquery-31/#id-decimal-format-decl
How do I format german style numbers e.g.: 1.000.00,99€ (for one million € and 99cents) ?The following approach:
format-number(26825.8, '#.###,00')
yielded an error: [FODF1310] Invalid picture string: '#.###,00'.