See

http://www.gnu.org/software/emacs/manual/html_node/elisp/Key-Binding-Conventions.html
On Dec 6, 2013 3:02 AM, "Rainer M Krug" <Rainer@krugs.de> wrote:

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> Hi
>
> one alternative subject could be "because it is Friday"...
>
> I am using org-mode and ess regularly, and I use quite a few keyboard
> shortcuts, but each time I read about a new one, I am wondering: why
> the heck these specific (default!) keyboard shortcuts?
>
> I am not asking why keyboard sequence, but e.g. why "export" in org is
> C-c e and why tangle is C-c C-v t, and so on.
>
> In other words: I am trying to *understand* why C-c and not C-o,
> because I have tremendous problems to remember the shortcuts - if I
> would know that there is s tree structure, where each following key
> narrows it down to further *thematically linked* commands, it would
> make it easier to learn these.
>
> Any insight into this? Or is there a emacs function which returns a
> random keyboard shortcut for a given function (some emacs shortcuts
> really seem to be that way...).
>
> Thanks,
>
> Rainer
>
>
> - --
> Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
> Biology, UCT), Dipl. Phys. (Germany)
>
> Centre of Excellence for Invasion Biology
> Stellenbosch University
> South Africa
>
> Tel :       +33 - (0)9 53 10 27 44
> Cell:       +33 - (0)6 85 62 59 98
> Fax :       +33 - (0)9 58 10 27 44
>
> Fax (D):    +49 - (0)3 21 21 25 22 44
>
> email:      Rainer@krugs.de
>
> Skype:      RMkrug
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