format columns to collapse and expand in excel
I already did this in an old excel worksheet but I CAN'T remember HOW I DID IT.
The result is a (plus) + and a (minus) - sign at the top of the worksheet in
row 1 at the location where you want your selected columns to either expand
or collapse.
I need to once again implement this handy formatting trick but for the life
of me remember how I did it....so frustrating!
Anyone out ther know how to do this?
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