|Do you know where your variables are?|
There it is right there. I say, and you even quote me saying: "what the macros actually do is not explained."
And your response is
the example explains exactly how to use each one.
It is impossible to make any headway with you, because you don't read what is written -- even when you've just quoted it -- and then you prattle on and on about things that simply aren't in dispute.
So, just stop!
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.