newRPL - Wiki examples for PEEK, POKE and NEWOB commands

[JoJo1973]

I'm adding a batch of commands to the wiki and I'd like to include meaningful examples when the command is obscure and rarely used.

PEEK, POKE and NEWOB fall into the description, and I can't come with an example that satisfies me: I could show how PEEK and POKE work on some random memory location, but is there some special address that I could use?

NEWOB is even worse in this respect: the HP50G AUR suggested an example, but the presence of 8 levels of UNDO stack make it not very didactically interesting...

I'm out of ideas, do you have any?