You can examine the current list of IDs.
The IDs are organized into a tree.
Page anatomy
Page is divided into parts:
Menu ‒ you can perform actions, both in connection with current item (like adding a new sub-item, in top left corner) and global (editing your profile, in top right corner).
Hierarchy ‒ lists all parental items.
Item status ‒ contains current name and comment.
Discussion ‒ contains history of suggested names, notes and general talk about current item.
List of sub-items ‒ all direct sub-items are listed here and you can browse into them.
You can find menu and hierarchy in most other pages and they have the same function.
Colors
Colors are used both in discussion and list of sub-items to mark status of discussion comments and sub-items respectively.
Green entries are discussion comments which provide current item name.
Grey ones are entries with some problem. They are either items without any assigned name (discussion about non-existing item, new item which was not yet approved by an admin) or discussion comments not yet seen by an admin.
White ones are the rest, usual discussion and valid items.