Date   : Tue, 11 Jun 2013 10:53:15 +0100
From   : me@... (me@...)
Subject: Acorn newline sequence

On 11 Jun 2013,@00:39, Jules Richardson <jules.richardson99@...>
wrote:

> But in the TTY era I think it used to be CR first and then LF simply 
> because returning the carriage took a relatively long time, and the 
> hardware could be advancing the paper while the carriage was still in motion.

"The separation of the two functions concealed the fact that the print head 
could not return from the far right to the beginning of the next line in 
one-character time. That is why the sequence was always sent with the CR 
first. In fact, it was often necessary to send extra characters (extraneous
CRs or NULs, which are ignored) to give the print head time to move to the
left margin. Even many early video displays required multiple character times
to scroll the display."

http://en.wikipedia.org/wiki/Newline#History

David Glover.