You can use arrow keys to navigate in the map.
It saves horizontal space on a monitor. With proper indentation you can see where function starts and ends and new lines before curly bracket only waste horizontal space.
After being used to python and its : delimiter for indentation, putting curly braces comes naturally. In python it would look so weird to put a colon on a new line after a function definition, so the same standard follows if you're used to python.