How to apply _toolbarrese
without loosing my favorite custom buttons?
from: Sub D challenge 3!
Whenever you want to customize buttons etc you should create a new RUI file instead of editing the default one.
Check documentation here:
https://docs.mcneel.com/rhino/6/help/en-us/index.htm#options/toolbars.htm%3FTocPath%3DGlobal%20Options|Toolbars|_____0