What about the possibility of totalling columns?

[EmoCthulhu]

Wondering if we could add keys to the value strings, like "total": true, and then have a special row at the end where you have blanks everywhere except where the columns are that should be totalled. It could then be "type": "total", and the module would then display text as Total: 3200 or whatever.

[EddieDover]

Not a bad idea but I'll have to think on how to implement it with the least amount of breakage while maximizing functionality.