.... My error as you can use the diagonal border but it is "Read only" i.e.
cannot use data for calculations.

"Toppers" wrote:

You can only do this using drawing objects and will not be able to do any
calculations on the data., so why do it?

"TanjuE" wrote:

example : sales quantity at left upper corner and cumulative sales quantity
at lower right corner. the cell being divided to two, by a diagonal line.