The agenda and TODO lists give you lots of information about an item in a small amount of space.
In the screenshot below you can see that items tell you the file they come from and where in the file’s outline the item is.
In the example above you can see that the item is in the file reading and the outline looks something like this:
If you have lots of tasks in the same file it can be very useful to get a little more context to help differentiate them.