ISO/IEC JTC 1/SC34 N189

ISO/IEC JTC 1/SC34/WG2 N58

ISO/IEC JTC 1/SC34/WG2

Information Technology --
Document Description and Processing Languages
-- Information Presentation

Working Draft of Amendment 1 to ISO/IEC 10179
- Extensions to DSSSL -

Introduction

This amendment specifies additional flow object classes, additional formatting area, alternative syntax and API to DSSSL implementation, as well as some clarifications to the existing text of ISO/IEC 10179:1996.

NOTE Outline of the amendment 1 discussed at the WG2 meeting in Ottawa, Nov. 29-30, 2000

• a) A new Annex is proposed in Amendment 1 to summarize the types and symbols currently used. This annex will be key to considering future extensions to DSSSL.

• b) A new Annex is proposed in Amendment 1 to specify formal public identifiers and their associated characteristics for various line breaking and line composition methods.

• c) An Abstract Application Program Interface to an implementation of DSSSL is proposed in Amendment 1. This would be in conjunction with a New Work Item proposal to WG3 to define an Abstract Application Program Interface to the existing grove definition of HyTime.

  This would be the first step towards possible future amendments and New Work Item proposals supporting additional grove functionality along the lines of lessons learned regarding XPath, namespaces, URI values, and other XML-related concepts.

• d) New flow object classes for on-line display are proposed in Amendment 1, without changing existing flow object classes. The editor seeks user requirements in this area.

• e) A new formatting area is proposed in Amendment 1 to address the specification of the interline space between lines. Also, additional keep-related characteristics are proposed for inline display areas.

• f) The first alternative syntax for DSSSL is proposed in Amendment 1. This is ISLISP (ISO's LISP) and will include the support of side effects.

Amendment

TBD

Annex

Add the following Annexes B through E:

1. Expression Language

boolean : logic-type

ex.)

(if eqaul wordflag #t) x y)

symbol : symbol-type

ex.)

(font-weight: 'bold)

keyword : keyword-type

ex.)

(font-weight: 'bold)

char : character-type

ex.)

#\A : large 'A'

#\space : spacing 'empty charcter'

##\( : open circle paretheses '('

pair :

ex.)

(glyph-subset-table (list (cons glyph1 glyph2)))

quantity :

number :

real :

integer :

ex.)

string : string-type

ex.)

(string=? headstr "Contents")

procedure : procedure-type

ex.)

(apply (format-number stringsizes))

language : laguage-type

ex.)

(with-language french (spellchaeck-french))

2. SDQL

node-list : node-list-type

ex.)

(node-list-first firstpage)

named-node-list : node-list with name type

ex.)

(named-node column1 page-top)

3. Transformation Language

subgrove-spec : sub-grove specification type

ex.)

(subgrove-spec node | subgrove | class add null remove children | sublabel sort-children)

create-spec :

(create-root obj sg)

(create-sub snl sg property label unique)

(create-proc snl sg label result-path optional unique)

(create-follow snl sg label result-path optional unique)

result-node-list :

(select-by-relation rnl i proc)

transform-grove-spec :

(transform-grove snl obj ...)

(select-grove nl obj)

transliteration-map :

(define-transliteration-map variable transliteration-entry)

4. Style Language

sosofo :

ex.)

(element p (make paragraph))

style :

ex.)

(make paragraph style: emphasizing-style)

generated-object :

ex.)

(asis-indirect-sosofo (column-number))

length :

ex.)

rapage-height: 15in

decoration-area

ex.)

(make external-graphic entity-system-id: gsample.gif

(decoration-area ggraphics sample"

placement-point-x: 50

placement-point-y: 250))

display-space :

ex.)

space-before: (display-space 15pt max: 45pt priority: 1)

inline-space :

ex.)

escapement-space-before: (inline-space 15pt max:45pt)

glyph-id :

ex.)

(glyph-subst gst-eng glyph-aacute)

glyph-subst-table :

ex.)

(make character glyph-id: eacute glyph-subst-table: gst-eng)

address :

ex.)

(make link destination: chapter-2)

color-space :

(color-space string arg ...)

ex.)

(color-space gISO/IEC 10179:1996//Color-Space Family::Device RGB h)

color :

(color color-space arg ...)

ex.)

(define *rgb-color-space*

(color-space

gISO/IEC 10179:1996//Color-Space Family::Device RGB h))

(define *midnight-blue* (color *rgb-color-space* 0.0 0.0 0.5))

...

(make paragraph color: *midnight-blue*)

page-model :

(define-page-model page-model-name [[region+ | width | height | filling | decoration]])

(region [[x | y | width | height | decoration* | filling | header | footer | flow-map?]])

culmn-set-model :

(define-column-set-model variable

[[column-subset* | fill-out? | tied-column-subset* |

filling-direction? | width? | height? | decoration*]])

(column-subset [[column+ | flow-map | top-float-space-below? | bottom-float-space-above? | balance? |justify? | justify-limit? | justify-last-limit? | length-deviation? | length-decrease-order? | align-lines?]]) (column [[width? | height? | x-origin? | y-origin? | footnote-separator? | header? | footer?]])

DSSSL should be supported to registrate the formal public identifiers for value without description of characteristics. DSSSL is including what should be registrated value of the following characteristics:

• line-breaking-method:
• line-composition-method:

These characteristics' values shuld be registrated by procedure in ISO/IEC 9070.

For example:

"ISO/IEC 10179:2001//LINE COMPOSITION METHOD::CHINE"

"ISO/IEC 10179:2001//LINE COMPOSITION METHOD::JAPAN"

"ISO/IEC 10179:2001//LINE COMPOSITION METHOD::KOREA"

"ISO/IEC 10179:2001//LINE COMPOSITION METHOD::CJK MIX"

"ISO/IEC 10179:2001//LINE COMPOSITION METHOD::EXTENDED ASEAN MIX"

- : empty

+ : exist

e : exist

i : inherited or inline

n : not-inherited

d : display