How about adding a note to the kbizobj.Delete() method in the documentation that you can delete all the records by passing a .T. to it. I found this out the hard way. I was trying to delete them by using:

SCAN
  THIS.Delete()
ENDSCAN

Which didn't work since the framework moves the record pointer automatically (ie. it was deleting every other record). After tracing the code, I found passing a .T. made it much easier ;-)