I've noticed that some, but not all AU-effects and instruments has a pulldown menu in the upper bar of the plugin window where a couple of presets can be recalled. These are named: Pres 0: "some name" Pres 1: "some other name" ...and so on. Can these be changed by the user. How? How are these related to settings files, which are written and opened in the pull down menu slightly more to the left in the same upper bar of the plugin window - a small triangle.