WHAT are the additional options that Advanced Editing add (and where are they)?

Look at right on the toolbar icons. There is at least 5 icons of this plugin:
- rotate selected
- move selected
- flip selected
- resize selected
- edit points
The last two I used frequently.
And many others under other menus.
If you don't see it, try to maximize the window until you see help icon.
Also, some plugins work ONLY with installed SH3D version.