If you like to write, you’ll often run into the text not auto-wrapping, especially on markdown documentation files.
Whenever you run into a case where the line isn’t wrapping, just look up and you’ll see the option to change the Line wrap mode from No wrap to Soft wrap.
Changing to Soft warp now shows the line wrapped.
I had to look up the difference between soft wrap and hard wrap, since I thought “why not just name it No wrap vs Wrap?” But I guess they wanted to be explicit in saying that this option wasn’t going to insert actual line breaks.
Sara Ford's Blog 