Just a little clarification about edit selection and track selection. Track selections and edit selections are two separate things. A track can be selected without having any ranges selected within it. Track selection is used for commands like deleting a track, making it inactive, grouping, etc. These are things that have nothing to do with editing, per se.
An edit selection is like selecting a range of text within a word processing document. Although most people now use "Insertion Follows Track Selection," it's still possible to have an insertion or edit selection within a track that isn't selected. Regardless of whether one links the track selection and insertion, it's helpful to keep in mind that selections within any given track and selections of tracks, again, of tracks, are two separate things. Slau