A more thorough explanation:

Definition: Arrangement in order of breadth refers to the placement of claims in a patent application in order of scope. This means that the first claim in the application or patent is the broadest, while later claims become progressively narrower.

Example: Let's say a company has invented a new type of smartphone. The first claim in their patent application might be something like "A mobile device with a touch screen display." This claim is very broad and covers a wide range of devices. Later claims might be more specific, such as "A mobile device with a touch screen display and a front-facing camera." This claim is narrower because it specifies additional features that the device must have.

This arrangement in order of breadth is important because it helps to ensure that the patent covers as much ground as possible while still being specific enough to be enforceable. By starting with a broad claim and then narrowing down, the patent holder can protect their invention from competitors who might try to make similar products with slight variations.