[NTG-context] Avoid double entries in ToC

[Henning Hraban Ramm]

Hi,
I got a very special case: In a booklet of forms, each form must appear twice, but only once in the ToC.

At the moment, every form is a chapter in a component that I include twice.

Do you have an idea how to get only the first identical entry in the ToC?


Greetlings, Hraban
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