> (And it's important to very much slow down the workings of the tool movement
> speeds or one can go "around the bend" mentally in seconds!)

One thing that can work well for this kind of close zooming is the "Area" tool (in the bottom of the viewport)- snap the center of the area rectangle to the end, and then if you drag a small window it will be focused right on that spot.

Sometimes I use a combination of the area zoom to center the view on one spot, then use the zoom button at the bottom of the viewport to zoom in slowly by moving the mouse only a small distance up.


> Little red dots show up when ends are close but not joined?

Nope, nothing is displayed right now for close but not joined. It would probably be nice to show something, but the tricky thing is to decide what distance should trigger a display like that. If the distance is too loose, then it will look like there are errors on things that are actually fine.

There is a red square outline that is displayed if you have control points turned on and there is more than one point stacked up on the same location, which tends to cause problems.

- Michael