Quote: " C# .NET wrapper"
I'm afraid I am finding this a little too complicated and user unfriendly, although it is clearly a clever tool. I think it would take me longer to get ok with it than it did to get ok with AppGameKit, so sorry but thank you.
Quote: "Xlsx format spreadsheets are just xml files stored in a renamed zip file"
I had started to write a function that could create or modify a spreadsheet using the unzipped files but after the good news from Paul today I may wait a little. thank you also for the information that you provided.
Quote: "The following commands will be in the next version"
Oh wow, thank you Paul, really appreciated.
This is the better option for me at this time.
Thank you all for helping.