I note that in my program’s listing, I find a little red circle with a minus sign in it. This circle is superimposed over the lower right corner of the little listing icon of a method. Does this mean that I have an error?
I’m guessing it’s the scope of the item. If you set a class/property to private it will appear with red behind it or over the icon depending on your preferences/version.
Yup, that’s the symbol for Private. You’ll see a yellow triangle for Protected, and no icon for Public. If you happen to be working with items nested in a Module, there’s also a green circle for Global.