@MasterQ32
That had in mind.

@GenuineSid
Ok, I needed to check the bits of a negative integer to realize that I was terribly wrong with its content. Now I understand the sign called bit is the result of the bit collapse and is not a reference flag as happens in maths. It is the same operation on signed and unsigned. Loose knot.

The other point touches another doubt I had: what a pointer describes exactly. Is it a global address? or an offset into some sort of application memory block? From your sentence, it seems those blocks do exists.

Sincerely grateful.