Updated 2022 stair tool, still confused on "O" stair

[techdef]

Hey folks, can someone enlighten me on setting up a plain vanilla apartment building exit stair? 

ie: 2 landings and 2 flights. I'm not sure why the "O" stair needs 3 flights. That's not an O, its more like a Q or some other letter.

 

Backstory: setting up say 3 or 9 story stair towers within apartment buildings... My default is to make a landing using a slab on each story, then make a U-stair, single landing between each one (story aware). It would be mighty fine to skip the slab step and have either a U stair w/ 2 landings, or an O stair (dont care what its called), but set up in such a way that the railings would join between stories in sections for ADA folks.

 

So, where is L stair, 2 landings?

[zoomer]

Would be nice.

 

So far I also do the U-Stair with manual Slab for each Story.

And manually fittings for the Railing ....

 

For freestanding Stairs I even used the Railing Tool, to better

fit existing Railings.