[F&O] 15.2.1.1 Deep Equality of Nodes

1) The algorithm contains:

if ($parameter1 instance of element(*, xs:anySimpleType) and
      ($parameter2 instance of element(*, xs:anySimpleType))
        return fn:deep-equal(fn:data($parameter1), fn:data($parameter2))

Why is no collation parameter passed to the recursive call of 
fn:deep-equal?

2) The formatting and indentation of the code is inconsistent.

Till Westmann