Hi @Sridhar, sure I can. The input is the 'command' that you can see in the top text field. It says:
The output is the simple wireframe that pops up near the end of the GIF, made out of a bunch of blocks or squares.
Let me explain how it works. The 'w' stands for 'wireframe', so the application knows you're making a wireframe. Every separate line is a separate row in the wireframe, and everything that's put on the same line (such as 'video;w2, who-why') is put on the same row in the wireframe. The 'w2' explains the width of the 'square' we just made (in this case, the width of the video 'square' should be 2 units).
Of course, you can make much more complex wireframes with squares that have different widths and heights. I can show you a more extensive example (again, in a gif) if you're interested.
Does that make sense?