diff --git a/Periodic_2_triangulation_2/TODO.txt b/Periodic_2_triangulation_2/TODO.txt
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-=== POSTPONED
-
-The periodic regular triangulation is not implemented. This will need
-a different criterion here for changing from the 3x3 cover to the 1x1
-cover. An outline is given in the ESA paper.
-
-The 2D periodic triangulation implements a (Delaunay) triangulation on
-the 2-torus. For the Euclidean triangulation there exist interfaces
-with other packages. These have not been implemented for the periodic
-triangulation. The interfaces are:
-
-* There is no compatibility with the mesher.
-* The interface with the 2D alpha is not tested.
-
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