//TODO: Needs to return to a black screen - not to exit...
// i.e.: operational sequence
// 1) starts in a black screen
// 2) we 'start' with keypress "s" the entire set of analyses
// 3) at any point we need to be able to restart /
stop-return-to-black / trigger each analysis individually
// 4) should end in black screen as well
// 5) final kill button