Looking at http://en.wikipedia.org/wiki/ISO-8859-1
There's an extra character code besides the code that equal to the ANSI 
code. It consist of 3 integers ranging from 0-7. This code can be used 
in Ruby in conjunction with the escape character:

    ANSI  ISO-8859-1
--------------------
æ - 230 - 230 / 346
ø - 248 - 248 / 370
å - 229 - 229 / 345
?? - 198 - 198 / 306
?? - 216 - 216 / 330
?? - 197 - 197 / 305

"\306".length # Code for ??
> 1

Since this code doesn't exist in ANSI it seem to me that Ruby interprets 
ISO-8859 encoding. But I'm still wondering if this is system 
dependant...
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