Just to try another attempt for getting hints from you: You can see in the examples, the the middle vertical line (which is just the right frame of the left cell) is not exactly as high as the text needs. It is a bit higher and stick a little bit out, at the beginning (top) and at the end (bottom) of the natural table. How to fix this, so that the vertical line (right border frame) exactly ends and begins with the textline? That would help to get an exact connection to the next block. Of course the alternative would be to set frame=off for the tables and to place an vertical line as overlay on every single page (as background). But for that I would have to use the length of the text on a page, to adjust the line as long, as needed, not longer, not over the complete page every time. Thanks! Huseyin