Variable management

[lrdheat]

Just wanted to give a big thumbs up to the way variables are managed, and how assessable these variables are for use amongst home, CAS, and various apps on the Prime and on the HP 39gii as well. Outstanding that the plot, for example, produces it's own easily assessable variables such as roots, extremums, signed areas for further use in the app and in home or CAS. Real pleasure to use. Well done!