Many thanks to Lawrence Abrams (Sept.22/2011) for a very concise and helpful article. It was a great aid in organising Metro and getting rid of unwanted icons as well as adding others.
I have run into an unexpected problem: it seems impossible to sort the icons into useful groups or into any kind of order! As soon as one icon is moved to a desired spot, it displaces another that finds a place at random, causing a general reshuffle. It's like playing with quicksilver! Is there any way of getting each one to stay where it is put? I should be glad to know.