Placing a Selection Segment within a Direction Modifier

If your Direction Modifier affects a percentage of Entities, rather than all of them, you may like to specify which Entities within this percentage are affected first. You can do this by placing a ‘Selection Segment’ within the Direction Modifier.

Those Entities closest to the segment will be affected first (for example, a percentage of those Entities near a segment placed along the edge of a platform would be the first to board an arriving train). A Direction Modifier can only contain one Selection Segment.

To place a Selection Segment:

Select the Direction Modifier.
Right-click within the area of the Direction Modifier at the point you would like to place the segment and select Add Selection Segment.
A very short segment is placed at this point, indicated by a cyan square.
To lengthen the segment, click on the square and drag the segment to the desired length. Click again to place the segment.
To reposition the segment, click on its vertices and drag to the position you require.
To remove a segment, select the Direction Modifier, right-click within it and select Delete Selection Segment.