wow ses really blew my mind. I didnt know that emacs has a spreadsheet buitin. where do you find all those hidden goodies? is there a lost manual of emacs where they are listed?
See also Org Mode, which has basic[0] spreadsheet capabilities[1].
> is there a lost manual of emacs where they are listed?
That first link GP posted is literally a link to the Emacs manual[2]. Emacs and its info pages are something I also ignored for years, but one day I finally realized that I'm doing a disservice to myself by not reading manuals. Nowadays, I try to always read whatever official documentation there is for anything I work with more frequently; in some cases cover to cover. It's worth it.
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[0] - by basic I mean basic, until you learn enough Emacs to supercharge them; then there aren't so basic anymore.