Right ! Thank you very much...!

here is the link
https://3dwarehouse.sketchup.com/model.html?id=790075d9a7c85744342f1b3eb530f11f

I want to use an object of a warehouse3D file in another app.
I know isolate it, erasing any nearby objects, and re-edit it in a new .ac3D file.
But it always persists the large white square corresponding to the frame of the GE snapshot, and I d't know how to remove it
Thanks for answering

hello everybody
Iwould like to paint a regular spiraled band on a trunk of cone (lighthouse) How to do that ???

Yes, Yes, Yes.... many thanks!

How to select a segment of a cylinder (or cone) for painting only this segment ? Thanks for answer