All of Swoop JAM9a still in effect.
Added:
-- Optional Cover fill and all related parameters. You can allow the slope of the object to Distort the fill. No, the distortion doesn't vary as the slope changes. You can move the fill's origin using a hotspot; you have to select the object to see it. The hotspot.
With the cover fill on you should be able to show the swoop in roof plans. Turn the Back Lines off to help the object blend into the roof. (Use the A Roof2 layer in this case.)
-- Gable cuts at either end for fitting the object into a gable end. This is independent of the miter angles, and in fact you can't miter and gable-cut at the same time. (If you set gable cuts the miters turn themselves off.)