Thank you, Paul; much obliged.

Paul, I think I need a bit of further clarification.In the attached text document, which replicates the situation I had -- multi-coluns between 2 CSBs and an odd CSB further on. I have tried running your macro various ways, with different results. I see that it says, Selection, which I take to me that I must select a part of the document at least including the three CSBs. I assume that including more in the selection is not a problem. When I run the macro in this manner, it converts the document above the section also to 2 columns.

If I select only the text between the first two section breaks, it works, leaving a single NPSB above, but this leaves the remaining CSB in place.

I know you are a master at macros. Is there something I have misunderstood from your indication?

Thanks.