[NTG-context] Best way to store text for later use

[Denis Maier]

Am 18.09.2020 um 19:02 schrieb Hans Hagen:
> On 9/18/2020 3:36 PM, Denis Maier wrote:
>
>> I've tried using buffers, but this here doesn't work:
> Why not just fetch it when needed. There is no gain in storing it and 
> fetching from the xml tree is fast.
>
Most likely due to my limited understanding of how these things work. I 
thought storing the text and retrieving it later would be the easiest 
way to get rid of the constraints of linar processing of the XML file. 
The layout itself is determined by setups such as this one:

\startsetups abstract
     \startabstract
         \documentvariable{abstract}
     \stopabstract
\stopsetups

\setuphead [chapter][
     alternative=middle,
     page=yes,
     indentnext=no,
     style=\tfa\setupinterlinespace,
     after={\directsetup{placeauthors}\directsetup{abstract}},
     footer=chapterfooter,
     ]

How could I fetch the xml node from here so I don't need a variable, 
buffer or the like?

Denis