Can the sentence be interpreted as "nothing is told" or "not all is told" (some is told, some isn't told)? Could you explain to me the sentence and tell me more about sentences containing "not"? Thank you.

Hello Guest

You give us a nice question. I'm a mere English learner from Japan, but let me write something I have learned about English 'not'. (If I make mistakes, I'm sure our teachers come to correct them)

Syntactically 'not' can be considered as a word 'negating' the following word/phrase (constituent). But what the negation means depends on the sentence structure.
(1) In the structures as follows, 'not' works to negate the whole sentence.
[A is not B] = NOT [A is B]
She is [not (a boy)] =NOT [She is a boy]
He is [not (cool)] = NOT [He is cool]
[A will/did not come] = NOT [A will/did come]
He did [not (come)] =NOT [He came]
He will [not (come)] =NOT [He will come]
(2) When 'not' negates an adverbial word/phrase, 'not' negates only it.
He will come but [not (today)] = He will come another day.
He was accused [not (of the crime)]. = He was accused of another crime.
She is [[not (so)] pretty] = She could be pretty to some extent.
I am [not (always)] serious = I might be sometimes unserious.
(3) In some complex sentences, 'not' can raise (=move leftward)
I think he will [not (come)] -> I do [not (think)] he will come.

I knew he was [not (a fool)]. =/= I did [not (know)] he was a fool.

I would feel grateful if this could serve as any help to you.

paco