> How can i check if all @ilfo have the same value ?

if you like your tests to be readable:

test="every $a in absatz/listenpunkt/@ilfo satisfies $a = absatz[1]/listenpunkt/@ilfo"

if you like them short and sweet

test="absatz/listenpunkt/@ilfo != absatz/listenpunkt/@ilfo"

or probably more work for the system

test="distinct-values(absatz/listenpunkt/@ilfo)[2]"

David

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