When I move point on the headline tags position. I evaluate
`(org-element-at-point)` or `(org-element-context)`, both return element
type is `(headline ....)`. I hope those two functions can return more
explicit element type like "tags".

I tried to find this type API function in existing functions. But I have
not found. If someone knows, please let me know. I use this function to
detect whether current point is on tags element. I try to write a simple
extension to display tag explanation info through eldoc.

-- 

[ stardiviner ]
I try to make every word tell the meaning that I want to express without misunderstanding.

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