Allow for zoom/change of scale of graphs like elevation/distance. Right now, when riding, I'd like to see the ENTIRE course I'm going to ride, and, be able to zoom in on the scale/view of the profile for more detail. I've had instances where the course has ended, and I had no idea it was going to end. Also, there should always be a distance marker on the course in the unit (imperial vs metric) as selected in the default config settings. Things seem to shift from course to course (some show distance in m and others in miles).