Extended ASCII characters

[Rey Paulo]

Can anyone tell me which character is used to toggle a vt100 terminal to
display the extended ascii characters.  

Thanx.
-- 
Rey V. Paulo                  | Internet:  rvp at csc.canberra.edu.au 
University of Canberra        | I am not bound to please thee with my answer. 
AUSTRALIA                     |         -Shylock, in "The Merchant of Venice" 
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