Hi Brian,

> Could the Flat (on the options list) have a little Z and up
> pointing arrow alongside it perhaps?

Rather than doing that, I think when I have a chance to work on it I will be switching things around so that you will have some different options for which direction is considered the "flat" direction instead of it being fixed to world Z.

Maybe I will also be able to have an "auto" direction mode that will align the direction automatically for helix curves.

- Michael