Maybe one of you ski racing fans can explain what they are doing with the laid down aqua blue lines on the Olympic downhill course? Watching training runs right now on NBCSP. Obviously to help visuals both for racers and tv viewers but what else? Note have not had cable tv for years so am looking at much that may have been around awhile. Saw same color lines about the snowboard slopeside course earlier this morning that just highlighted the edges of all the features. On the downhill course there seems to be a system of short lines perpendicular to the course trail edges. Are those distance measurement points or do they have to do with indications of points on the course say with turns? Are such lines on courses for World Cup skiing events also?