Is it possible to have two or more tags that are "peers," i.e., all equal, not in a hierarchy, be in an ad-hoc, as-needed way be hierarchical? For example, I have the tags org-mode, lisp, and emacs, and I want to have a header with the tags* my header :emacs:org-mode:lisp:So the above should be an ad-hoc hierarchy of- emacs- org-mode- lispAs I understand, the order indicates the level in a hierarchy. True? So the above has emacs at the top of the tag hierarchy, then org-mode, then lisp. Correct? So yes, I could simply set up this hierarchy. But what I really want is to not have these tags in any set hierarchy, rather, be able to use them independently, mix-and-match, e.g.,* Another Header :emacs:lisp:or maybe* Yet Another Header :lisp:and this would be just about non-Emacs, non-org-mode Lisp. Is this mix-and-match possible?LB