Bspymaster: Here you go. (Ashbad, I'm impressed how technical you can talk and even confuse someone when explaining something

)
What he is saying is this (slightly modified):
In Axe, an easy-to-learn programming language (Kerm NO COMMENTS ON THIS LOL), you don't get an error, because the Axe draw commands are so-called 'clipped' commands. this means, that you can draw offscreen any time you want, because if the x or y value is out of the borders of the screen, nothing is actually drawn (sprites are another story, but i'm not explaining that now).
About the object stacks, L1 is an Axe memory location, in which he gives every object 16 bytes.
Think of an object stack this way:
L1
(Object 1) L1+0
(Object 2) L1+16
etc.
I hope this explains enough to follow his story.
P.S.: You might want to learn Axe, you can download Axe
here.