D'OH!

no plugins - just the base install.

What did I expect? I expect that the individual points will become visible and editable, as per
http://help.sketchup.com/en/article/115553
http://help.sketchup.com/en/article/115550
etc.

I'm very new, but I've looked around to make sure I'm not making some kind of obvious gaffe.

I simply cannot get the Path Editing to display. For example, I quickly draw a freehand line, then use the pointer to double-click on it. Nothing.

I can try adding points. The + cursor appears, but no points get added when I click on the line.

I've rerun the install, asking it to Repair.
I've completely uninstalled and reinstalled.

version 15.3.33 32bit Windows