tangential edges

[Ghirarduzzi.G]

I ask a question that maybe has already been unleashed but using the search key the keys are so generic that they really come out an ocean of results. I apologize in advance if by case I create smile a 2.0 smile.
the question is very simple. when I choose the display option "shading with edges" (which is the one I use most often along with "no hidden" and "wireframe") I get a visualization where there is no distinction between tangent edges and non tangent edges. in practice all edges are black and I can't find where I still have to round and where not (for example).
precise that I chose the option of the config.pro for the tangent lines to "attenuated" and that in the case of the visualization "no hidden" everything works correctly.
If someone can help me. . .

ps also take the opportunity to greet the friend maxopus!

 

[freexf]

tangent edge display works only for modes that are not shading.

 

[mespo]

you have to go into options-viewing entities-style visualization edges.change solid for without display.
so you will see only non tangent edges