[Tutor] re clear screen

[alan.gauld@bt.com]

> > os.system("cls")
> > os.system("clear")

> Wow on M$ it's cls and on UNIX clear? How unbelievably unpythonesque. 

Nope, its just the underlying operating systems. Its Bill Gates and 
Ken Thompson who should be brought together if anyone - although CLS 
actually comes from CP/M so maybe its, the now dead, Gary Kildall, 
the inventor of CP/M, we should shout at!

I suppose python could provide a system dependant clearScreen() command 
in the os module or something, but it would just look like the one 
posted, full of "if os==/elif..."

And quite how we should clear a teletype or WAP terminal remains a 
mystery - 24 newlines  as a default seems kind of wrong somehow.

Alan g.