[wongarsu]

The first sentence is exactly what LF is in CRLF, and implies the necessity of CR. CR returns the cursor to the first character of the active line, LF moves it one line down without changing the horizontal position.

The second sentence is the UNIX interpretation of LF doing the equivalent of CRLF. But calling it a standard line ending when it's an alternative meaning defined in the standard as "requires agreement between sender and recipient of data" is a bit of a stretch. It's permissible by the standard, but it's not the default as per the standard