Re: Interpreting commands

[Kevin Rodgers]

Don Saklad wrote:
> Thank you Jason Rumney !
>
> Interpreting commands
>      a.
>         What's the difference?... between author and correspondent
>         What's the difference?... between recipient and correspondent
>         in
>         C-c C-s C-a  rmail-summary-sort-by-author
>         C-c C-s C-c  rmail-summary-sort-by-correspondent
>         C-c C-s C-r  rmail-summary-sort-by-recepient
>
>    > Correspondent = union ( author  recipient )
>
> Please elaborate, what does union mean?...

The set operator: http://en.wikipedia.org/wiki/Union_%28set_theory%29

--
Kevin Rodgers
Denver, Colorado, USA