[OS X TeX] ISO Latin 9 encoding in TeXShop?

[Franck Pastor]

I've just installed TeXShop 2.26 and tried its improved "Encoding"  
macro, which is much more easier to use than before :-) But I also  
noticed that an encoding is missing on the encodings list opened by  
this macro: ISO Latin 9. Is it recognized by TeXShop? In that case,  
what must I enter? Something like

% !TEX encoding = IsoLatin9

seems to work, but I would like to be sure of it. Also Ansinew  
(cp1512), the default encoding of many TeX front ends on Windows, is  
missing, but maybe it's a deliberate choice, since it's much like ISO  
Latin 1?

Many thanks in advance,

Franck Pastor