org: Orgtbl mode
3.4 The Orgtbl minor mode
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If you like the intuitive way the Org table editor works, you might also
want to use it in other modes like Text mode or Mail mode. The minor
mode Orgtbl mode makes this possible. You can always toggle the mode
with ‘M-x orgtbl-mode RET’. To turn it on by default, for example in
Message mode, use
(add-hook 'message-mode-hook 'turn-on-orgtbl)
Furthermore, with some special setup, it is possible to maintain
tables in arbitrary syntax with Orgtbl mode. For example, it is
possible to construct LaTeX tables with the underlying ease and power of
Orgtbl mode, including spreadsheet capabilities. For details, see
Tables in arbitrary syntax.