You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is the use of fn key in mac?" whose answer is triggering the Dictation function.
Each document should contain about 30 words, and these documents should contain useful information.

Query: how the fn key works on mac
Useful Output:

Doc 1: https://macmost.com/e-2833 Learn how to use the keys on the top row of your Mac keyboard. You can use them to send F1, F2, and other F-Keys
Doc 2: In System Settings > Keyboard, you can choose whether the Fn key changes the input source (handy if you regularly work with different languages
Doc 3: The FN or Globe key on your Mac keyboard can be used to switch between special feature and F-keys, change what is shown on a Touch Bar,
Doc 4: On a full sized keyboard, the only purpose of the Fn key is to shift the top-row Function and Media keys, so it isn't used that often.
Doc 5: https://macmost.com/e-2689 The FN or Globe key on your Mac keyboard can be used to switch between special feature and F-keys, change what is