afaik abort is impossible, but if you would start to return 0 from callback
without preformimng any real action inside then i think it should finish
quickly.
i didn't tried it, but maybe it would work - but i am not sure if it can't make
any unwanted reordering
or another possibility is to make
When the user launches a sort on the list display of 30,000 records, it may
take some time, even on a fast device like a T3 (like 10 seconds). I would like
to offer the possibility of interrupting that sort by simply tapping on the
Please wait... message. But even if I check for a screen tap
