CAO 40.2.1 gives the DEFINITION
cross-country: means flight for the purpose of either visual or radio navigation.
This may constitute either a single leg to a destination other than the point of departure
or a number of sectors terminating at either the point of departure or another destination
and:
For the purposes of meeting the requirements of a particular rating, the definition is further expanded to specify, in the case of Night VFR,
A flight of at least 3 hours duration or at least 100nm, other specifications used to define a minimum of 50nm from the point of departure.
This bit doesn't DEFINE cross- country, it just specifies HOW MUCH for a Night VFR Nav.
Avid has got it sussed out correctly, but the flight needs at least one sector,
(reporting point or landing point) implying a need to NAVIGATE,
away from the departure aerodrome. hence Bankstown to Hoxton Park, or Bankstown - Camden, etc, constitutes "Cross-Country".
Now refer to "LOGGING OF FLIGHT TIME" in CAO 40.1.
You need to log the the sectors of the "Flight", they may be turning points or landing points.
And yes, CASA will need to photocopy the first and last page of each logbook submitted.
As you need a minimum of 1,500 hrs for an ATPL, including 100 hrs night and 75 hours instrument,
you will normally have satisfied all cross country requirements unless you spent your 1,500 hours in the circuit, hardly likely, even for an instructor.
Your big stumbling block, as with most ATPL aspirants, will be logging the required 100 hours night,
harder to get normally than the 75 hours instrument time.
Best of luck, another milestone.
MF