Given Bold, Italic, Colored are syntactic representation of semantics that we do capture - they can overlap.

Moreover, in Bob's user-defined mapping from semantics to syntax, Bob's "important" can be bold, while Alice's "important" can be italic.

italic text about human again

Is that meaning someone hide the Diamond up?

The italic is usually appeared to be for word like his, he you, etc. Last one example is when mentions about the dog using his

Does most italic texts in this novel mean to be for emphaszing?

There are something some words seems not important were italics, I was wondering what's the reason of this?