Shp files contain scaleable 2D polygon objects.
In ContactDirectionSymbol.shp
1. object -> 4 vertices = a quad
2. object -> 2 vertices = a line
to get rid off the course line, set the line vertices to zero
Code:
0
4
0.0 0.13481 0.0
-2.14312 0.13481 0.0
-2.14312 -0.13481 0.0
0.0 -0.13481 0.0
2
0.0 0.0 0.0
0.0 0.0 0.0