but what shall i do if within time I need to change passwords so I need to change them in the SecNotes?
[/quote]

PW for every note is permanent. You can't ever change it.
[/quote]

this is inconvenient ... it turns out that 1 password changes, and you need to start a new notebook, when other valid passwords remain in the old one
[/quote]

I do not understand 
[/quote]

so, if i do not need the nite any longer (old pw) i can' delete it? then it will be trash bin in my app