> super-comma

I would have assumed it's a synonym for apostrophe. super-comma <-> upper-comma, with super meaning upper, like in superscript.

I think of it as supersedes the comma in the order of operations. You work inward, or outward (depending which way you read the list.)

no it's always been semicolon, the "super-comma" comes from describing how to use it. "It's similar to a comma but like a super comma."

Huh? I've always understood that the clause after the semicolon is peripheral; the meaning of the whole sentence does not change without it.

thats one use for it. supercomma is another.

same character, used differently?

i call it a super comma when its separating a list with commas within the sets.

so if i am listing colors like green, blue, red; foods like apple, orange, strawberry; and seasons like winter, summer, fall.

it's one use case for an em-dash, because whatever you have inside it has commas in the phrase.

square and rectangle situation. a supercomma is a subset of semicolon.