Thanks for your comments crystalinv Turan's work is simply masterful. The most enjoyable part of running the site is meeting people like Turan and learning how they get the best out of Excel. I was thinking about writing an article on top ten calculation tips for Excel. Here is a flavour of what I mean.
- Use of consistent systems of units.
- Validation of calculations.
- Transparency of calculation method.
- Use of drop down lists (data validation or combo boxes).
- Use of charts to provide a graphical response to user input.
- Use of calculation menus to separate constituent parts of a calculation.
- Use of data lookups (tabular lookups or curve fitting data).
I would be very grateful for any other tips and suggestions.