Help:Items

Each item has a unique identifier, a number that makes it unique. This number always starts with a Q. You see this number in the title and you can also use it to search subjects or to link them to other subjects.

The label is what will occur in the title bar when you switch to that language, but also what will show when you present the information in a timeline or map. If a language does not exist, the application will choose your second favourite language and so on.