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.
Captain, we're getting an unusual reading from the edge of the solar system. 
Put it on screen, Mr. Slop. 
Gasp. It's, it's a planet!  Sensors indicate that it's a whopper - 20 times the mass of Earth. 
Why, that's more like, like Neptune! But what's it doing out here? 
The Kuiper Belt is usually filled with planetoids and comets. 
What this about a viper belt? 
Not a viper captain, the Kuiper Belt. It's the region beyond the orbit of Neptune. Look. Over there is Pluto, and there's Makemake. 
But those are tiny planets, especially compared to this new guy. 
Indeed, Captain. Readings indicate that this is a gas giant, most likely with a rocky core. It orbits the earth once every 20,000 years. 
Not much chance of getting a birthday cake there! Why can't we see it? 
It's too far from Earth, sir. As it's a planet, it has a relatively low reflective quality... 
A bad libido, huh? 
No, sir, it's a low albedo. But we determine its presence, and its motion, and its size, by the way its gravity affects the other bodies around it. 
Whoa, heavy. What will they name it? 
Several names have been suggested, but right now it's simply referred to as Planet X. 
I vote for Donald Duck. That would be cool. Yes, I vote for that! 
I thought you might, sir. Follow this link to CalTech to learn more: 
To "activate" displaying of an arrow, use its property "Visible"
©  2018 John D Reinhart