How to break looong lines of code

Hi all,

how can I break looong lines of code in several lines for better readability, without scrolling to the right/left, please?
As an example in MATLAB we just add 3 dots at the end, so the compiler knows that the expression continues on the next line.

a newline is allowed at each place where a white space is allow:
i.e. before and after each name, keyword, operation, etc.
If one really needs to have a line break ith a number or name, add \ as the last characzer on the line.

Hi again,

Just to make sure, are the following two equal?

1) poly f=x+y;

2) poly f=x+
y;

Thanks in advance

yes.