I like the idea of using objects in cells - "Each cell returns a Python object". Any idea of the learning curve, how do users get on. How long does it take to learn compared to learning say vlookup?<p>Returning an object would help solve many spreadsheet problems. It is a great idea. Any thoughts on how to make the implementation easy to learn?<p>My interest - I am working on www.CellMaster.com.au