We often need to see the cut line of our toposurfaces in sections. Using a graphical display for toposurface category in VV (see attached image), we manage to get the display we want.
However, if there are other objects like walls, floors, or even filled regions, toposurface goes in background and thus is invisible. In such a situation, we have to use detail line instead (see dashed line in attached image) which is not effective at all.
IDEA : Please make toposurface to be placed in foreground in sections.
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