Hi Danny,

> Do the initial input curves stay highlighted for deletion or do
> they auto delete when the 'end cap' option is ticked?

It depends on whether you have "both sides" enabled or not - if you have it enabled then the result is kind of grown around the input curves and the input curves remain (they 're selected so you can delete them if you want with the Delete command). This is what is shown in the above screencaps.

But if you do "cap ends" with "both sides" turned off, it will replace the input curves, because otherwise it would generate a result that had some new pieces exactly overlapping on top of the inputs. With this method it is kind of like "growing" the input curve to one side so it seems to be better to replace the input in this case.

- Michael