chris writes:

In this country (NZ) we seem to hear 'rolling' from people who have
been trained at uncontrolled airfields and seem to bring that with
them when flying into controlled airfields. The rest of us don't
generally say it until we get to an uncontrolled airfield..

Do you say anything prior to the take-off? If so, what do you add by
saying "rolling"? (If not, I can understand why you'd say it,
although by the time you _are_ rolling, it's a bit late to warn anyone
who might be in your way.)

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