Is the short thick line POS. and the long U shape line the NEG.?

Question

I have a capacitor symbol that has a U with a small thick line in the U. I presume that the short thick line is POS. and the long U shape line is the NEG. Yes?

Answer 1

I never saw a U used as a capacitor symbol.

Are you sure it's not like this:

—|(—

the curved lead is the ground side in this case

Answer 2

If the closed section of the U is towards the line, then the line is the positive side. Otherwise, I wouldn't know.