A RecordsetClone is another set of pointers to the same set of records.
Since a recordset has only one current record at any time, a clone set is
useful when you want to look at two records at once.
The most common use is to find a record in the RecordsetClone of the form.
By searching in the clone set, you can find a record, and then decide
whether to display it. For example, if no match was found, you it is only
the clone set that is not pointing to a valid record now: the form itself is
still displaying the same record as before the search failed. If you do find
a match, you can display it very easily by setting the form's bookmark to
that of the clone set.
Another usage would be to duplicate a record. You could point the
RecordsetClone to the current record of the form, then move the form to a
new record, and copy the fields of the RecordsetClone into the new record.
