Speaking of being simplistic, how do I get back to the full-text question once I have answered it?

!! would be used to execute an OS command.

r is to run a script file (which is what you are wanting to do).

Is my understanding too simplistic?

Excellent learning technique!  Keep 'em coming!

I can't find the quote you list above.  The only distinction appears to be spaces vs non-breaking spaces.  Very hard to see on the screen!

It's good to see that I'm...