To change the appearance of the page, edit the styles of the corresponding elements (in most cases by using the "Main Frame" Style Zone).  
To change the menu’s links: edit, copy-paste, or delete the Link Elements within. 
To hide an element without deleting it, use its property Visible.
Okay, sit down. I don't know who you think you are, but this kind of thing has got to stop.

What kind of thing is that?

Oh, don't play dumb with me, Caswell. You know exactly what kind of thing, and I won't have it.

Have what?

Oh, so, that's how it's going to be, is it? My friends in the other room have been talking with your buddies...

I have neither another room nor any buddies...

Don't get smart with me, Caswell. Admit it. You stole this book.

Wait, what? First I'm not supposed to play dumb, now I'm not supposed to get smart. What do I do? Try to remain average?  Just read the book...

To "activate" displaying of an arrow, use its property "Visible"