The “Winds on Optimum Course” feature is very useful.  I’m not sure why it isn’t set to on by default, but then there are a lotof really useful  things in Expedition that are not on by default.  This feature puts a wind barb onto the optimum course.  This is great for visualizing the course to be sailed and possible sail changes…etc…   The wind barb is what is FORECAST to be the wind when the boat gets to that location!  Just looking at these wind barbs down the optimal course gives a good sense of angles forecast to be sailing.