V4MD Info about setBlank()

[info at vallemediatime.com]

> > At least can you confirm me that:
> > addRecord() write record into physicall db (HD or other), not in RAM
> > and
> > updateRecord() instead works in RAM... right?
>
> No

> Both write changes to disk.
Ok, but...
please add this more cleary in reference, at p.57  I read that addRecord()
add.[...] in the memory buffer (= temporary memory... not disk) and so I
have always bad understand this point.
Ciao
Paolo