I would like to expand and collapse groups of columns just like the subtotal
function does with rows; with a minus sign to collapse and a plus sign to
expand in the gray area for rows. Could I do that with columns?

Not using data|subtotals, but you can use Data|Group and outline.

Select a few columns and do Data|Group and outline|group.



JVICO wrote:

I would like to expand and collapse groups of columns just like the subtotal
function does with rows; with a minus sign to collapse and a plus sign to
expand in the gray area for rows. Could I do that with columns?

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Dave Peterson