<video width="960" height="540" autoplay loop>
  <source src="media/vkcube.webm" type="video/webm">
Your browser does not support the video tag.
</video>

Notes:

Here is an example of a simple graphical program. For those who do not know, this is "vkcube",
a program which, as the name suggests, draws a cube to the screen.

Suppose I am vkcube. How do I actually get myself onto the screen?

[comment]: # (!!!) <!--------------------------------------------------------->
