To enter a blank line into a document press. The key without typing any text on the line

Enter key. And do not type any text on the line.

Explanation:

You need to type the enter key, and without typing any of the text on the line. You can use this method to increase the cell size of the table as well, and wherever, you need to enter a new line. And you cannot code here or using any other command as respectively you are on front end UI like a word processor or text editor, and not code editor, and really you don't have any other command available as well.

i don't think so. although it would be nice. i am pretty sure that was an option an update or two ago. i guess they want you to stay 14 forever. haha.

maybe when you are listing people names in a job.

i am not 100% sure