Tim Bray wrote:
> On Sep 17, 2008, at 4:58 AM, Michal Suchanek wrote:
> 
>>> In unicode, it is represented by
>>> KATAKANA LETTER SE with
>>> COMBINING KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK.
>>>
> ...
>> y guess is this is not very common letter. I have no idea what it
>> means but then I have no idea about many other less obscure
>> combinations either.
> 
> It's not just an Asian thing.  The Welsh language has common 
> "characters" that require combining diacritics because there's not a 
> single Unicode code point.  Those combining characters exist for a 
> reason.  Also see http://en.wikipedia.org/wiki/Heavy_Metal_umlaut

Combining characters in UTF8-MAC may be also common.
http://en.wikipedia.org/?title=UTF-8#Mac_OS_X

-- 
NARUSE, Yui  <naruse / airemix.jp>