Returns true if the first argument is greater than the second.
xs:hexBinary
values. Also used in the
definition of the "le" operator.op:hexBinary-greater-than
( $arg1
as xs:hexBinary
,$arg2
as xs:hexBinary
xs:boolean
The function call op:hexBinary-greater-than($A, $B)
is defined to return
the same result as op:hexBinary-less-than($B, $A)