Japanese Character Set Adobe Japan 1.3
Function:: Replaces a sequence of glyphs with a single glyph which is preferred for typographic purposes. This feature covers those ligatures which may be used for special effect, at the user's preference. The glyph for ct replaces the sequence of glyphs c t, or U+322E (Kanji ligature for "Friday") replaces the sequence U+91D1 U+66DC U+65E5.
Function:: Some fonts contain both a default form of zero, and an alternative form which uses a diagonal slash through the counter. Especially in condensed designs, it can be difficult to distinguish between 0 and O (zero and capital O) in any situation where capitals and lining figures may be arbitrarily mixed. This feature allows the user to change from the default 0 to a slashed form. When setting labels, the user applies this feature to get the slashed 0.
Function:: Like the JIS78 Forms described above, this feature replaces standard forms in Japanese fonts with corresponding forms preferred by typographers. Although most of the JIS78 substitutions are included, the expert substitution goes on to handle many more characters. The user would invoke this feature to replace kanji character U+5516 with U+555E.
Function:: Replaces glyphs set on other widths with glyphs set on full (usually em) widths. In a CJKV font, this may include "lower ASCII" Latin characters and various symbols. In a European font, this feature replaces proportionally-spaced glyphs with monospaced glyphs, which are generally set on widths of 0.6 em. The user may invoke this feature in a Japanese font to get full monospaced Latin glyphs instead of the corresponding proportionally-spaced versions.
Function:: Replaces glyphs on proportional widths, or fixed widths other than half an em, with glyphs on half-em (en) widths. Many CJKV fonts have glyphs which are set on multiple widths; this feature selects the half-em version. There are various contexts in which this is the preferred behavior, including compatibility with older desktop documents. The user may replace a proportional Latin glyph with the same character set on a half-em width.
Function:: This feature replaces default (JIS90) Japanese glyphs with the corresponding forms from the JIS C 6226-1978 (JIS78) specification. The user would invoke this feature to replace kanji character U+5516 with U+555E.
Function:: Replaces glyphs set on uniform widths (typically full or half-em) with proportionally spaced glyphs. The proportional variants are often used for the Latin characters in CJKV fonts, but may also be used for Kana in Japanese fonts. The user may invoke this feature in a Japanese font to get a proportionally-spaced glyph instead of a corresponding half-width Roman glyph or a full-width Kana glyph.
Function:: Replaces 'simplified' Chinese hanzi or Japanese kanji forms with the corresponding 'traditional' forms. The user inputs U+53F0 and is offered a choice of U+6AAF, U+81FA, or U+98B1.
Function:: Replaces default forms with variants adjusted for vertical writing when in vertical writing mode. While most CJKV glyphs remain vertical when set in vertical writing mode, some take a different form (usually rotated and repositioned) for this purpose. Glyphs covered by this feature correspond to the set normally rotated in low-end DTP applications. In vertical writing mode, the opening parenthesis (U+FF08) is replaced by the rotated form (U+FE35).
Function:: Replaces some fixed-width (half-, third- or quarter-width) or proportional-width glyphs (mostly Latin or katakana) with forms suitable for vertical writing (that is, rotated 90 degrees clockwise). Note that these are a superset of the glyphs covered in the vert table. ATM/NT 4.1 and the Windows 2000 OTF driver impose the following requirements for an OpenType font with CFF outlines to be used for vertical writing: the vrt2 feature must be present in the GSUB table, it must comprises a single lookup of LookupType 1 and LookupFlag 0, and the lookup must have a single subtable. The predecessor feature, vert, is ignored. A rotated glyph must be designed such that its top side bearing and vertical advance as recorded in the Vertical Metrics ('vmtx') table are identical to the left side bearing and horizontal advance, respectively, of the corresponding upright glyph as recorded in the Horizontal Metrics ('hmtx') table. (The horizontal advance of the rotated glyph may be set to any value, since the glyph is intended only for vertical writing use. The vendor may however set it to head.unitsPerEm, to prevent overlap during font proofing tests, for example.) Thus, proportional-width glyphs with rotated forms in the vrt2 feature will appear identically spaced in both vertical and horizontal writing. In order for kerning to produce identical results as well, developers must ensure that the Vertical Kerning (vkrn) feature record kern values between the rotated glyphs that are the same as kern values between their corresponding upright glyphs in the Kerning (kern) feature. Proportional- or half-width Latin and half-width katakana characters are rotated 90 degrees clockwise for vertical writing.
Function:: Respaces glyphs designed to be set on full-em widths, fitting them onto half-em widths. This differs from hwid in that it does not substitute new glyphs. The user may invoke this feature in a CJKV font to get better fit for punctuation or symbol glyphs without disrupting the monospaced alignment.
Function:: The National Language Council (NLC) of Japan has defined new glyph shapes for a number of JIS characters, which were incorporated into JIS X 0213:2004 as new prototypical forms. The 'jp04' feature is a subset of the 'nlck' feature, and is used to access these prototypical glyphs in a manner that maintains the integrity of JIS X 0213:2004.
Function:: The National Language Council (NLC) of Japan has defined new glyph shapes for a number of JIS characters. The 'nlck' feature is used to access those glyphs.
Function:: Respaces glyphs designed to be set on full-em widths, fitting them onto individual (more or less proportional) horizontal widths. This differs from pwid in that it does not substitute new glyphs (GPOS, not GSUB feature). The user may prefer the monospaced form, or may simply want to ensure that the glyph is well-fit and not rotated in vertical setting (Latin forms designed for proportional spacing would be rotated). The user may invoke this feature in a Japanese font to get Latin, Kanji, Kana or Symbol glyphs with the full-width design but individual metrics.
Function:: Respaces glyphs designed to be set on full-em heights, fitting them onto half-em heights. This differs from valt in that it does not substitute new glyphs. The user may invoke this feature in a CJKV font to get better fit for punctuation or symbol glyphs without disrupting the monospaced alignment.
Function:: Respaces glyphs designed to be set on full-em heights, fitting them onto individual (more or less proportional) vertical heights. This differs from valt in that it does not substitute new glyphs (GPOS, not GSUB feature). The user may prefer the monospaced form, or may simply want to ensure that the glyph is well-fit. The user may invoke this feature in a Japanese font to get Latin, Kanji, Kana or Symbol glyphs with the full-height design but individual metrics.
Function:: These fonts support the Japanese script. Each font is Unicode™ encoded, and available in different formats. Please review the product information for each font to ensure it will meet your requirements.