Functions Internal Spreadsheet

Hello,

I'm searching for an overview of the function of the internal Spreadsheet which I can start with Tools -> Spreadsheet.

For expressions and attributes I already used it but what about the other functions.

I read something about creating family members but it seems as if it is not editable afterwards.

How can I create symbols with the spreadsheet and what about the assembly rage?

I hope some people give me advises oder guidelines for explaining the functions.

Thanks in advance.

Christian