Re: What constitutes "character"? New Problem

From: James Kass (jameskass@worldnet.att.net)
Date: Mon Nov 12 2001 - 11:21:26 EST


Arjun Aggarwal wrote,

>
> Thank you for describing the ZWJ and ZWNJ controls.But the Unicode webpage
> mentioned above for Hindi does not show up in the way the attachment picture
> showec it to be.The half forms are not visible in my browser (IE 5.0) and
> Outlook Express.
>

What font is your browser using?
[Tools] - [Internet Options] - [Fonts]
Check that the font selected for Devanagari is an OpenType font. Also,
the same font should be selected for the Latin script. The Internet
Explorer may use the font specified for Latin as the default to display
UTF-8 text.

Unicode makes a distinction between "character" (which is part of data
stored on a computer) and "glyph" (which is the display form). The
LATIN CAPITAL LETTER A character exists on a computer as a number
which is commonly referenced in hexadecimal, binary, or decimal notation.
The operating system must substitute a display glyph from a font when
the computer is called to display text on a screen.

The actual binary sequence for LATIN CAPITAL LETTER A is invisible to
the casual user. The user need not be concerned with the procedure
undertaken by the computer to substitute a glyph for an encoded
character. So, if a string of two or three binary sequences encoded
on a hard drive cause an operating system to substitute a Devanagari
half letter or a conjunct in the text display, it is a substitution very
similar to the substitution of the letter "A".

Best regards,

James Kass.



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