Hello World!
I'm talking about the argument asSeenBy  in Alice3.
I have a scene with a snowman and penguin
and I'm going to have the snowman just keep turning
from one side to the other
just  making a turn and he's going to look to us
like he's going around in a circle.
So I'm going to use a while true
That means do forever and going to take the snowman and have him turn
just a tiny bit to the left .125
and can we run that.  We can see the snowman turns
a little bit each time.
Actually I could...
(Let's make this window a little bit smaller.)
I could add a detail here and
pick  an animation style,
but I want to pick asSeenBy
And pick the penguin for that.
And now when I run it we see the snowman
from the Penguins point of view.
So you can see he seems to move in a circle.
I'm going to go to set up see and move the penguin
Just a ittle bit closer to the snowman and run that again.
Notice that from the Penguins point of view
the closer the snowman is to the penguin
the smaller the circle that he makes is.
Let's changed that again, let's make it quite a ways away.
Ok, spread them apart a little bit.
And now you're going to see snowman make a really big circle.
You can experiment with that asSeenBy we could say as seen by
the snowman is turning as seen by the snowman.
If we put it back to this, that would be what it would be you hadn't set that.
You  could try different things: as seen by the camera.
It  just disappeared altogether.
So experiment with that.
You can get some really nice effects
by using asSeenBy.