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Section 16, Functions on Functions, contains the following function signatures: fn:function-name($func as function()) as xs:QName? fn:function-arity($func as function()) as xs:integer fn:partial-apply($func as function(), $arg as item()*) as function() fn:partial-apply($func as function(), $arg as item()*, $argNum as xs:integer) as function() In all of these, "function()" should be "function(*)".
Fixed as suggested. Note however that some of the changes are superseded by bug #7350, which removes the partial-apply() function.