What do the red and grey lines mean?

[halodri]

Hello,

What do red and gray mean in relation to the lines in the 2D view?

[Tex_Lawrence]

You need to show the items on the Layers tab, because those colors could be part of your layer colors. Each layer can have its own color.

Become proficient with layers. You will not regret it.

[ohiolyons]

Would help if you posted the file otherwise we are guessing.

My guess is those are the vectors you have selected.

or

You changed the color of the layer they were on and they are not necessarily selected.

[halodri]

You need to show the items on the Layers tab, because those colors could be part of your layer colors. Each layer can have its own color.

Become proficient with layers. You will not regret it.

Oh right, that's the problem. I exported a Sketchup file to a DXF file and for some reason from the start it has two layers, a 0 layer and an ST_NDR layer.

Thanks for the help!