I use a pretty basic notes file that has headers like:
* Next Actions ** action 1 ** action 2 * Deferred ** deferred 1 ** deferred 2 etc.
I rarely use tags or todo states on the elements of my lists. So far I've only come across ways to create custom Agenda views by filtering the tags or todo states; I haven't found any info on filtering through headers instead.
Is this possible or is it not built-in into org-mode? I'm quite comfortable in lisp as I do all my coding (hobbyist) in Common Lisp but I'm not that familiar with eLisp.