1999.2.12 Yasuhiro Okui NIHON UNITEC CO., Ltd.
The word "interlinear" means "something between lines" or "something inserted between lines". It includes ruby, ken-dot, added kana (characters which represent the remaining of the pronunciation of Kanji), and return mark (a mark which indicates the reading order of Chinese ancient documents when Japanese are reading them) in Japanese documents.
The word "intercharacter" is a newly-coined word derived from "interlinear". That means "something between characters in the writing direction". This kind of object can appear in Chinese documents made by word processors.
Regarding properties of each interlinear object, we (CICC Font WG) made a presentation in MLIT (Multilingual Information Technology) meeting held in Hanoi, Vietnum in October 1998. We also brought the document to ISO SC34 meeting held in Chicago in November 1998 and they decided to go forward on this as a subdivision of the font project.
This time, we are proposing a generic model for interlinear/intercharacter object by adding the concept of intercharacter so that you can adopt it for its broad use in Asian countries other than Japan.
You can associate multiple interlinear/intercharacter objects with the same character(s).
This document doesn't provide any particular way to specify these items above. For example, you may use customized SGML/XML tags to do that.
Absolute or relative to font size of character(s) of the parent object with which the interlinear/intercharacter object is associated.
This value is an angle measured counterclockwise from the parent object's writing direction to the child object's writing direction. Probably interlinear objects have 0 degree for this property and intercharacter objects have 270 degree (when the main text is horizontally flowed) or 90 degree (when the main text is vertically flowed).
Absolute or relative to font size of character(s) with which the interlinear object is associated.
This value is the offset between the positioning point of child object and parent object. (You may refer to writing direction as X direction.)
When this property is specified, the property for position in writing direction will be ignored even if there is one.
Absolute or relative to font size of character(s) with which the interlinear object is associated.
This value is the offset between the baseline of character(s) with which interlinear object is associated and the baseline of interlinear object. (You may refer to line progression direction as Y direction.)
ILC-property ::= ILC-name, ILC-value-property-list
ILC-name ::= STRUCTURED-NAME
ILC-value-property-list ::= (ILC-type-property|ILC-font-size-property|
ILC-formatting-type-property|ILC-typeface-property|
ILC-rotation-property|
ILC-writing-direction-offset-property|
ILC-line-progression-direction-offset-property)+
ILC-font-size-property ::= ILC-font-size-name, ILC-font-size-name,
ILC-font-size-value
-- Property for font size
ILC-font-size-name ::= STRUCTURED-NAME
ILC-font-size-value-type ::= "ABS" | "RELATIVE"
ILC-font-size-value ::= REL-RATIONAL
ILC-typeface-property ::= ILC-typeface-name, ILC-typeface-value
-- Property for typeface
ILC-typeface-name ::= STRUCTURED-NAME
ILC-typeface-value ::= STRUCTURED-NAME
ILC-formatting-type-property ::=
ILC-formatting-type-name, ILC-formatting-type-value
-- Property for formatting information in writing direction
ILC-formatting-type-name ::= STRUCTURED-NAME
ILC-formatting-type-value ::= "HEAD"|"CENTER"|"TAIL"|"JUSTIFICATION"
ILC-rotation-property ::= ILC-rotation-name, ILC-rotation-value
-- Property for rotation
ILC-rotation-name ::= REL-RATIONAL
ILC-rotation-value ::= 0|90|180|270
ILC-writing-direction-offset-property ::= ILC-writing-direction-offset-name,
ILC-writing-direction-offset-value, ILC-writing-direction-offset-value
-- Property for position in writing direction
ILC-writing-direction-offset-name ::= STRUCTURED-NAME
ILC-writing-direction-offset-value-type ::= "ABS" | "RELATIVE"
ILC-writing-direction-offset-value ::= REL-RATIONAL
ILC-line-progression-direction-offset-property ::=
ILC-line-progression-direction-offset-name,
ILC-line-progression-direction-offset-value,
ILC-line-progression-direction-offset-value-type
-- Property for position in line progression direction
ILC-line-progression-direction-offset-name ::= STRUCTURED-NAME
ILC-line-progression-direction-offset-value-type ::= "ABS" | "RELATIVE"
ILC-line-progression-direction-offset-value ::= REL-RATIONAL
The name "Ruby" is just an example in this document. You can use any name.
The name "Ken-dot" is just an example in this document. You can use any name.
The name "Return-Mark" is just an example in this document. You can use any name.
The name "Added-Kana" is just an example in this document. You can use any name.
