Ok, subflows - again - confused about looking at their nodes

[Trying_to_learn]

Yes Steve, I kind of get that.

But when I do a search on node red access flow variable in function I get sent to sites like this:

context

Na, not helpful.

Then

Sounds familiar

Not helpful.

Where is the magic stuff explaining how to use the $parent part?

That is what was driving me crazy.

However, in retrospect: Yeah, I shall have to re-write the subflow and code around it to send the stuff I want into the subflow in the message.

Anyway, back to bashing my head against the wall.