When I click on the end of a formula in a cell, I usually get all the
associated cells highlighted with different coloured borders.

I have one workbook with several sheets where this no longer happens on
just one sheet.

Is there some option I need to turn on in the sheet to make the coloured
cell borders appear? Or might it be something to do with very recently
using automaic update to bring my Office 2003 up to date?

Any assistance much appreciated.

Tom Walker