December 2008
Intermediate to advanced
912 pages
33h 22m
English
Content preview from CJKV Information Processing, 2nd Edition
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Chapter 7: Typography
refers to this functionality as jidori ( jidori), and it is used in conjunction with the
character grid.
Alternate Metrics
Most users of CJKV-capable word processors and other text-processing applications are
all too familiar with the concept of full-width characters. To a great extent, it represents
a limitation. You may have experienced a feeling of being trapped in the mind set that
CJKV-specic characters—zhuyin, kana, hangul, and ideographs—must always use equal
set widths. While this is certainly typical, it is not always true. However, bear in mind that
some CJKV locales, such as China and Taiwan, still follow the convention of setting all
characters on a very rigid grid, except perhaps punctuation and bracket-like characters.
A new twist to desktop CJKV type technology is the ability to supplement CJKV fonts
with alternate metrics—alternate in the sense that the default metrics are still preserved
as full-width, but that the user can now choose alternate widths. Alternate metrics can
encompass character classes such as punctuation, symbols, kana, and even ideographs.
Some fonts have implemented alternate metrics through additional font instances that
appear in applications’ font menus—this means that two fonts now appear in applica-
tions’ font menus where before there was only one. One is typically the xed-width font,
and the other is the ...
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