Great! Thanks,

I think you missed Node Properties - they are still located under 
Elements on Syntax page

https://orgmode.org/worg/dev/org-syntax.html#Elements

https://orgmode.org/worg/dev/org-syntax.html#Node_Properties

I think it should be moved to Greater Elements section

And it is also listed as Element on API page

https://orgmode.org/worg/dev/org-element-api.htm


I have also discovered more:

Syntax page states:

 > With the exception of inlinetasks 
<https://orgmode.org/worg/dev/org-syntax.html#Inlinetasks>, items 
<https://orgmode.org/worg/dev/org-syntax.html#Plain_Lists_and_Items>, 
planning 
<https://orgmode.org/worg/dev/org-syntax.html#Clock,_Diary_Sexp_and_Planning>, 
clocks 
<https://orgmode.org/worg/dev/org-syntax.html#Clock,_Diary_Sexp_and_Planning>, 
node properties 
<https://orgmode.org/worg/dev/org-syntax.html#Node_Properties> and table 
rows <https://orgmode.org/worg/dev/org-syntax.html#Table_Rows>, every 
other element type can be assigned attributes.

But  this list is not full - if you check the source code 
https://code.orgmode.org/bzg/org-mode/src/master/lisp/org-element.el#L3866

        ;; Item. +
        ;; Table Row. +
        ;; Node Property. +
        ;; Headline.
        ;; Sections (must be checked after headline).
        ;; Planning.+
        ;; Property drawer.
        ;; Paragraph.
        ;; Clock. +
        ;; Inlinetask. +
;; From there, elements can have affiliated keywords.

So Pragraph, Property Drawer, Sections and Headlines are missing from 
this list



On 6/8/19 6:56 PM, Nicolas Goaziou wrote:
> Hello,
>
> ihor <ihor@antonovs.family> writes:
>
>> So these are things that I have discovered so far:
> [...]
>
> I think I fixed the issues you pointed out. Thank you.
>
> Regards,
>