[xsl] Scope of =>

["Leo Studer leo.studer@xxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hello

I wonder about the scope of the => operator

I use Oxygen with Saxon-EE 12.3

A = B => not()   and  (A=B) => not()

Are different

And 

A = B => not()   and  A= (B => not())

Are the same

However

A/B/C => distinct-values()  and    (A/B/C) =>  distinct-values()

Are the same 

And

A/B/C => distinct-values()  and    A/B/(C => distinct-values())

Are different ???



Where can I find the specifics?


Thanks for your care

Cheers,
Leo