There are thick lines surrounding the buildings, how do I get rid of these please?

[g.o.eley]

I am a student and fairly new to AutoCAD, I have been stuck on this issue the last two days and would be really grateful for some help. I am trying to make an isometric view of a map I can put into photoshop for part of my site analysis, the map and building heights are imported from CADMapper. All the building have a thick outline around them and I can't work out why or how to remove it. Alternatively I can put it into '2D wireframe' but then you can see all the geometry which I also don't want want! I am working on a MacBook Pro, I have attached both screenshots and my file. Please can somebody explain how I can resolve this, 

Thanks in advance,

Grace 

[ennujozlagam]

https://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Unable...

[maxim_k · Accepted solution]

Welcome to Autodesk Forums!

Hi Grace,

@g.o.eley 

You need to adjust settings for the current visual style -

change System Variable VSSILHEDGES to 0 (zero) and try to create PDF.

At the command prompt type VSSILHEDGES and hit Return:

Command: VSSILHEDGES
Enter new value for VSSILHEDGES <1>: 0
Command:

[g.o.eley]

Thanks so much this worked!!!