This at the beginning of this page

%%commentbox
Commentbox at the top right of the page

__see also__\\
[DontCreateMe]
%%

produces the commentbox at the top right of this page.

This in the middle of the text

%%commentbox
Commentbox in the middle of the page

__see also__\\
[DontCreateMe]
%%

shows a comment somewhere at the right side.

Maybe someone knowledgeable describes the exact positioning of commentboxes.