> -----Original Message-----
> From: Tapio Markula [mailto:email@example.com]
> Sent: Monday, November 22, 1999 5:55 AM
> To: firstname.lastname@example.org
> Subject: Difficulties with CSS2
> I'm not sure about the correct characters:
> In CSS2, identifiers (including element names, classes, and IDs in
> selectors) can contain only the characters [A-Za-z0-9] and ISO 10646
> characters 161 and higher, plus the hyphen (-); they cannot
> start with a
> hyphen or a digit.
> BUT what are ISP 10646 161 and higher - I don't find them!
> The '_' might not be used??
There are many thousands of characters in ISO 10646 with codepoints above
161. See the ISO 10646 standard, the Unicode 2.0 book, or the Unicode
character database on the Unicode.org web site to get an idea of what they
The description says that you can use any Unicode character outside the
ASCII range. For characters in the ASCII range, only [A-Za-z0-9] plus '-'
can be used.
The '_' is code point 95, in the ASCII range. According to the description
above it's not allowed.
--- Paul Chase Dempsey
Microsoft Visual Studio Text Editor Development
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