Hi Leapyear,
Sent you a copy yesterday. I meant to say LIFO stack, not stacked LIfo!
The spreadsheet gives an example of an excel implementation of a LIFO stack, where it can take a max of 3 entries from the stack. Look at the formulas right below.
3 entries is the max I have encountered. Most of the time it is 1 or 2. It is easy to expand to 4 or higher, but Excel has limitations in the number of nested IF´s.
Hope it is of value for you,
Regards,K