Are these icons you're referring to in the toolbar or within a layout?
They are called badges. You cannot search FM Help for 'badges' and find them, however I recall seeing the list somewhere (maybe in knowledge base).
Anyway, here is file which explains each symbol (for version 11) compliments of Michael Horak (Comment). You must sign into tech net to download the file.
badges.gif 17.1 K
They are in fields.
Thanks LaRetta. Just what I needed. I'm glad to hear it wasn't really obvious!
the help topic "Showing or hiding badges on layout objects" may really you here. It lists the badges (with icons)
Go to Help Contents, search for
Designing and creating databases
Editing objects on layouts
Showing or hiding badges on layout objects.
I know I'd seen it. It should be easily found when searching for 'badges'; folks don't know to do all of that to find it. FM Help ... in this instance ... isn't.