Thanks Alfred_t_s, I wondered if there were any "hotkeys" I have a trackpad on my MacBook so it doesn't quite behave as it should. Also the text in the left hand column is wider than the column, so I don't see all the text, that mentions the mouse controls. I don't think, it's a resolution issue as I have 1920 pixels wide, so maybe you can look at this, in later software revisions. (y)