On Thu, Feb 1, 2018 at 10:30 AM John Kitchin <jkitchin@andrew.cmu.edu>
wrote:

> I was not aware of any implied hierarchy with tags. The order is not
> important as far as I know, and what you describe as mix-and-match seems
> ok. There is an idea of inheritance, e.g. sub-headings can inherit tags
> from higher headings.
>

Same here.


> I am not sure about the org-mode tag.
>

"-" is an invalid tag character.. the tag can be "org_mode", but not
"org-mode". Last time I tried using hyphen, I remember that the tag
auto-alignment would stop working (C-u C-c C-q) and also the tag face won't
be applied.

@Lawrence:

You can have tag inheritance this way:

* Emacs :emacs:
Emacs stuff
** Lisp :lisp:
Emacs lisp stuff here
*** Org :org_mode:
Emacs + Lisp + Org mode stuff
** Org :org_mode:
Emacs + Org mode stuff (but not lisp)
-- 

Kaushal Modi