Final answer:
When using the F8 tool, CTRL + SHIFT click on a region automatically selects all the elements within that region.
Step-by-step explanation:
When you have the F8 tool (grabber) active and you CTRL + SHIFT click on a region, the tool will automatically select all the elements within that region. This can be useful when you want to quickly select multiple elements on a webpage for editing or copying. It's a convenient way to save time and effort when working with web design or development.