Why the is output of ls direct to screen and rediect to file different?

[Tomthon]

I have use  '>' redirect the output of ls to a file,and then cat the file to 
screen,but the record is comparted by carriage return,not the same as ls 
directly to sreen?What's the reason?

For searching answer,i have ported the old version of ls in minix to my 
linux,but the output of which is the same as the former in above.

Thank you~
                                
--------------
Tomthon
2007-04-07