CJKV Information Processing, 2nd Edition

Horizontal and Vertical Layout

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hiragana ligatures that are intended only for vertical use, and for which there are no hori-

zontal forms.

Vertical Latin Text

While the transformation from horizontal to vertical layout is somewhat straightforward

for most CJKV characters and involves mainly punctuation and symbols (and small kana

in the case of Japanese), handling Latin text in vertical writing mode requires special con-

siderations and has more than one option. As they say about Perl: TIMTOWTDI.

*

PostScript CJKV fonts, by default, treat Latin glyphs the same as everything else when it

comes to vertical writing mode—their orientation remains the same. e preferred way in

which to vertically set Latin text, however, involves 90˚ clockwise rotation.

e following are the ways in which Latin glyphs can be set vertically, in order of relative

preference:

Rotated 90˚ clockwise.•

Converted to full-width forms, and then set as is—most Latin glyphs used in CJKV •

text are half- or proportional-width.

Set together horizontally in the same cell using half- or third-width forms if they con-•

sist of only two or three characters, respectively—this is sometimes referred to as tat-

echuyoko ( tatechūyoko) in Japanese, which means “horizontal in vertical.”

†

Set as is—this is rarely desirable unless you are writing a document that needs to •

illustrate the various ways to set Latin text vertically ...