Thank You, that half works as I hoped it would.
It was the Main Index Template, not Page Template.
Yes, it does remove the side bar, but comments posted still hit an invisible wall and continue on the next line.
Is there any way to get posts to run all the way across the page as if the invisible sidebar were no longer there?
Thank You, I see that the option is available on the pages, but not the front page, which is the post page. How would I remove the sidebar from all pages. Would it be a matter of inserting the “no sidebar code” in the editor somewhere?